Use last end position in pursuit mode

[congqixia]

See also #26097
/kind bug

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia

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• pkg/mq/msgstream/OWNERS [congqixia]

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[mergify]

@congqixia E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[weiliu1031]

/lgtm

[mergify]

@congqixia E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[codecov]

Codecov Report

Merging #26144 (ba5baff) into master (f97d5a7) will increase coverage by 0.57%.
Report is 8 commits behind head on master.
The diff coverage is 87.41%.

@@            Coverage Diff             @@
##           master   #26144      +/-   ##
==========================================
+ Coverage   82.05%   82.62%   +0.57%     
==========================================
  Files         807      806       -1     
  Lines      109432   107232    -2200     
==========================================
- Hits        89789    88598    -1191     
+ Misses      16551    15556     -995     
+ Partials     3092     3078      -14     

Files Changed	Coverage Δ
internal/querycoordv2/meta/collection_manager.go	87.21% <ø> (-0.19%)	⬇️
internal/querycoordv2/meta/target.go	90.32% <0.00%> (-9.68%)	⬇️
internal/rootcoord/util.go	84.00% <ø> (ø)
internal/storage/print_binlog.go	58.22% <53.84%> (-0.16%)	⬇️
internal/querycoordv2/job/job_load.go	89.70% <55.55%> (+0.69%)	⬆️
internal/querycoordv2/meta/target_manager.go	84.67% <73.33%> (-1.19%)	⬇️
internal/proxy/meta_cache.go	88.36% <81.69%> (+0.01%)	⬆️
internal/rootcoord/root_coord.go	89.93% <84.86%> (+7.35%)	⬆️
pkg/mq/msgstream/mq_msgstream.go	78.95% <98.93%> (+0.79%)	⬆️
internal/metastore/kv/rootcoord/kv_catalog.go	87.54% <100.00%> (+0.38%)	⬆️
... and 8 more

... and 183 files with indirect coverage changes

[sunby]

/lgtm