Update etcdutl migrate command: load wal records from the latest snapshot

[ahrtr]

Resolve #17227

cc @serathius @ivanvc @jmhbnz @fuweid @siyuanfoundation

Please read https://github.com/etcd-io/etcd/blob/main/CONTRIBUTING.md#contribution-flow.

[codecov]

Codecov Report

Attention: Patch coverage is 52.94118% with 8 lines in your changes missing coverage. Please review.

Project coverage is 68.75%. Comparing base (75f2ae1) to head (ec52e35).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
etcdutl/etcdutl/migrate_command.go	52.94%	6 Missing and 2 partials ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
etcdutl/etcdutl/migrate_command.go	9.78% <52.94%> (+9.78%)	⬆️

... and 19 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #19128      +/-   ##
==========================================
+ Coverage   68.74%   68.75%   +0.01%     
==========================================
  Files         420      420              
  Lines       35647    35663      +16     
==========================================
+ Hits        24504    24521      +17     
- Misses       9713     9717       +4     
+ Partials     1430     1425       -5     

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[serathius]

/retest

Changes in server/etcdserver/apply/apply.go

[ahrtr]

/test pull-etcd-integration-1-cpu-amd64

[fuweid]

LGTM on green

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahrtr, fuweid

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[ahrtr]

/test pull-etcd-robustness-arm64