Update to new finidats from latest ctsm5.3 spin-up

Same list of finidats that I updated in this PR:
https://github.com/ESCOMP/CTSM/pull/2724/files

bld/namelist_files/namelist_defaults_ctsm.xml

@@ -1382,13 +1382,13 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
          ic_ymd="18500101" sim_year="1850" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".false."
          lnd_tuning_mode="clm5_1_GSWP3v1" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 <finidat hgrid="0.9x1.25" mask="gx1v7" use_cn=".true." use_cndv=".false." use_fates=".false."
          ic_ymd="18500101" sim_year="1850" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".false."
          lnd_tuning_mode="clm6_0_GSWP3v1" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 <!--
@@ -1430,7 +1430,7 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
          ic_ymd="20110101" sim_year="2000" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm6_0_GSWP3v1" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 
@@ -1515,7 +1515,7 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
          ic_ymd="20000101" sim_year="2000" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm5_1_cam7.0" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 <!-- clm6_0 and cam7.0 -->
@@ -1524,7 +1524,7 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
          ic_ymd="20000101" sim_year="2000" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm6_0_cam7.0" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 <!-- clm5_0 and cam7.0 -->
@@ -1589,7 +1589,7 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
          ic_ymd="20000101" sim_year="2000" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm5_1_cam7.0" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 <!-- 2003 -->
@@ -1653,7 +1653,7 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
          ic_ymd="20000101" sim_year="2000" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm6_0_cam7.0" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 <!-- 2003 -->
@@ -1728,15 +1728,15 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
          ic_ymd="20000101" sim_year="2000" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm5_1_cam6.0" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 <!-- NB: This pSASU finidat is from an 1850 spin-up -->
 <finidat hgrid="0.9x1.25"    maxpft="79"  mask="gx1v7" use_cn=".true." use_cndv=".false." use_fates=".false."
          ic_ymd="20000101" sim_year="2000" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm6_0_cam6.0" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 <!-- 2003 -->
@@ -1801,7 +1801,7 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
          ic_ymd="20000101" sim_year="2000" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm5_1_cam6.0" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 <!-- 2003 -->
@@ -1866,7 +1866,7 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
          ic_ymd="20000101" sim_year="2000" do_transient_pfts=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm6_0_cam6.0" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.3/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc
 </finidat>
 
 <!-- 2003 -->