Update main to 3.0.0-alpha1 and fix breaking changes

[dbwiddis]

Note: Test failures are expected until all upstream dependencies change their version qualifiers to alpha1 and fix breaking changes in the description below.

• Still waiting on Neural Search update to alpha1: [3.0] Update neural-search for OpenSearch 3.0 compatibility neural-search#1141

Description

Fixes breaking changes in Flow Framework plugin for OpenSearch 3.0.0 release

• SearchResponse TotalHits value field is now private: Update to Apache Lucene 10 for 3.0.0 OpenSearch#16366
• AcknowledgedResponse package is moved: Move o.o.action.support.master classes OpenSearch#17104
• Move o.o.client to o.o.transport.client: [JPMS Support] Refactoring of org.opensearch.client from :server module OpenSearch#17272
• Possible other package changes for [META] Split and modularize the server monolith OpenSearch#8110
• Integ test cleanup possibly impacted by Block access to system indices from REST APIs OpenSearch#7936

Related Issues

• Relates to [META] Breaking changes in 3.0 OpenSearch#3351

Check List

• New functionality includes testing.
• Commits are signed per the DCO using --signoff.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
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[martin-gaievski]

neural PR for 3.0-alpha has been merged, you're good to go now folks

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 75.57%. Comparing base (8d1b9fc) to head (f25e96f).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ework/transport/CreateWorkflowTransportAction.java	0.00%	0 Missing and 1 partial ⚠️

❌ Your patch status has failed because the patch coverage (0.00%) is below the target coverage (70.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1026   +/-   ##
=========================================
  Coverage     75.57%   75.57%           
  Complexity     1050     1050           
=========================================
  Files           101      101           
  Lines          5212     5212           
  Branches        498      498           
=========================================
  Hits           3939     3939           
  Misses         1035     1035           
  Partials        238      238           

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