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

[Jinny-Wang]

…og() to public

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.