[release-19.0] Release of v19.0.0

[systay]

Includes the release notes and release commit for the v19.0.0 release. Once this PR is merged, we will be able to tag v19.0.0 on the merge commit.

[vitess-bot]

Review Checklist

Hello reviewers! 👋 Please follow this checklist when reviewing this Pull Request.

General

• Ensure that the Pull Request has a descriptive title.
• Ensure there is a link to an issue (except for internal cleanup and flaky test fixes), new features should have an RFC that documents use cases and test cases.

Tests

• Bug fixes should have at least one unit or end-to-end test, enhancement and new features should have a sufficient number of tests.

Documentation

• Apply the release notes (needs details) label if users need to know about this change.
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• There should be a comment at the top of each new or modified test to explain what the test does.

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Backward compatibility

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• vtctl command output order should be stable and awk-able.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.43%. Comparing base (977b585) to head (32bbed9).
Report is 4 commits behind head on release-19.0.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-19.0   #15359      +/-   ##
================================================
- Coverage         67.43%   67.43%   -0.01%     
================================================
  Files              1560     1560              
  Lines            192581   192642      +61     
================================================
+ Hits             129858   129899      +41     
- Misses            62723    62743      +20     

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[frouioui]

Rebased this PR to include the PRs that have been merged during code freeze:

• [release-19.0] SHOW VITESS_REPLICATION_STATUS: Only use replication tracker when it's enabled (#15348) #15362
• [release-19.0] Bugfix: GROUP BY/HAVING alias resolution (#15344) #15377
• [release-19.0] [vtctldclient] Add GetShardReplication (#15389) #15390
• [release-19.0] VtctldClient Reshard: add e2e tests to confirm CLI options and fix discovered issues. (#15353) #15364

[GrahamCampbell]

Indentation level changed in error?

[frouioui]

From what I am seeing it doesn't affect the format on GitHub.

[GrahamCampbell]

Trailing space added in error?

[frouioui]

Rebased #15401.