[Backport 2.x] Support transport action names when registering NamedRoutes (#7957)

[DarshitChanpura]

Description

Backports #7957

Companion PR: opensearch-project/security#2956

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.search.SearchWeightedRoutingIT.testStrictWeightedRoutingWithCustomString

• URL: https://build.ci.opensearch.org/job/gradle-check/19200/
• CommitID: 38dc931
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.remotestore.SegmentReplicationUsingRemoteStoreIT.testPrimaryStopped_ReplicaPromoted
      1 org.opensearch.action.admin.cluster.node.tasks.ResourceAwareTasksTests.testBasicTaskResourceTracking

• URL: https://build.ci.opensearch.org/job/gradle-check/19199/
• CommitID: d0be845
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Merging #8459 (4588904) into 2.x (610dc65) will increase coverage by 0.10%.
The diff coverage is 93.15%.

❗ Current head 4588904 differs from pull request most recent head 015c9e9. Consider uploading reports for the commit 015c9e9 to get more accurate results

@@             Coverage Diff              @@
##                2.x    #8459      +/-   ##
============================================
+ Coverage     70.57%   70.67%   +0.10%     
- Complexity    57094    57106      +12     
============================================
  Files          4746     4745       -1     
  Lines        270463   270481      +18     
  Branches      39931    39939       +8     
============================================
+ Hits         190871   191171     +300     
+ Misses        63231    62925     -306     
- Partials      16361    16385      +24     

Impacted Files	Coverage Δ
...extensions/rest/RestInitializeExtensionAction.java	65.43% <0.00%> (ø)
...rch/extensions/rest/RestSendToExtensionAction.java	42.50% <92.85%> (-4.17%)	⬇️
.../main/java/org/opensearch/action/ActionModule.java	95.36% <93.75%> (+0.32%)	⬆️
.../src/main/java/org/opensearch/rest/NamedRoute.java	95.34% <95.23%> (-4.66%)	⬇️

... and 451 files with indirect coverage changes

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.search.SearchWeightedRoutingIT.testStrictWeightedRoutingWithCustomString
      1 org.opensearch.remotestore.SegmentReplicationUsingRemoteStoreIT.testReplicaHasDiffFilesThanPrimary

• URL: https://build.ci.opensearch.org/job/gradle-check/19266/
• CommitID: 4588904
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[owaiskazi19]

@DarshitChanpura can you resolve the conflicts?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.snapshots.CloneSnapshotIT.testCloneAfterRepoShallowSettingDisabled

• URL: https://build.ci.opensearch.org/job/gradle-check/19466/
• CommitID: 015c9e9
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.search.SearchWeightedRoutingIT.testStrictWeightedRoutingWithCustomString

• URL: https://build.ci.opensearch.org/job/gradle-check/19518/
• CommitID: c2d91a9
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.