Fix last page not appearing for Shemerly on tablet

[ahmedre]

The Shemerly mushaf has an odd number of pages. In dual screen mode when
translations are turned off (i.e. 2 mushaf pages), the last page was not
appearing due to it being out of bounds. This patch allows the last page
to be empty.

[github-actions]

OLD: app-madani-debug.apk (signature: V1, V2)
NEW: app-madani-debug.apk (signature: V1, V2)

          │            compressed            │           uncompressed           
          ├───────────┬───────────┬──────────┼───────────┬───────────┬──────────
 APK      │ old       │ new       │ diff     │ old       │ new       │ diff     
──────────┼───────────┼───────────┼──────────┼───────────┼───────────┼──────────
      dex │  11.8 MiB │  11.9 MiB │ +1,011 B │  30.1 MiB │  30.1 MiB │ +2.1 KiB 
     arsc │   1.9 MiB │   1.9 MiB │      0 B │   1.9 MiB │   1.9 MiB │      0 B 
 manifest │   5.8 KiB │   5.8 KiB │      0 B │  28.6 KiB │  28.6 KiB │      0 B 
      res │   1.5 MiB │   1.5 MiB │      0 B │   1.7 MiB │   1.7 MiB │      0 B 
    asset │ 404.2 KiB │ 404.2 KiB │      0 B │ 678.6 KiB │ 678.6 KiB │      0 B 
    other │ 181.2 KiB │ 181.2 KiB │     +5 B │ 365.6 KiB │ 365.6 KiB │      0 B 
──────────┼───────────┼───────────┼──────────┼───────────┼───────────┼──────────
    total │  15.8 MiB │  15.8 MiB │ +1,016 B │  34.7 MiB │  34.7 MiB │ +2.1 KiB