[Engine] change loadHistoryUUID to protected, and Origin#isFromTransl…

[Jinny-Wang]

Description

• change loadHistoryUUID to protected,
• change Origin#isFromTranslog to public
  so that subclasses of Engine implemented in plugin repository can access them

Related Issues

Resolves #19753

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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[msfroh]

@mch2 -- Any strong feelings on these APIs? You're the one who introduced loadHistoryUUID to share it between InternalEngine and NRTReplicationEngine. Any objections to making it protected so non-core Engine implementations can use it?

[github-actions]

❌ Gradle check result for 3cc022a: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[mch2]

@mch2 -- Any strong feelings on these APIs? You're the one who introduced loadHistoryUUID to share it between InternalEngine and NRTReplicationEngine. Any objections to making it protected so non-core Engine implementations can use it?

Nope no issue.

[github-actions]

✅ Gradle check result for 91037c6: SUCCESS

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.19%. Comparing base (8dd1286) to head (91037c6).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #19752      +/-   ##
============================================
+ Coverage     73.12%   73.19%   +0.07%     
- Complexity    71099    71169      +70     
============================================
  Files          5754     5754              
  Lines        325296   325296              
  Branches      47052    47052              
============================================
+ Hits         237868   238115     +247     
+ Misses        68282    68024     -258     
- Partials      19146    19157      +11     

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