Task cancellation API version guard fix

[sgup432]

Description

Fixing version guard for #7445
Backport 2.x PR - #7711

Related Issues

#6953

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.

[sgup432]

@andrross
@dblock

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.indices.replication.SegmentReplicationIT.testScrollCreatedOnReplica
      1 org.opensearch.backwards.MixedClusterClientYamlTestSuiteIT.test {p0=tasks.list/10_basic/tasks_list test}

• URL: https://build.ci.opensearch.org/job/gradle-check/16128/
• CommitID: 1339c9e
  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 #7712 (1339c9e) into main (c659d04) will increase coverage by 0.26%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##               main    #7712      +/-   ##
============================================
+ Coverage     70.88%   71.15%   +0.26%     
- Complexity    56211    56452     +241     
============================================
  Files          4680     4680              
  Lines        266083   266083              
  Branches      39074    39074              
============================================
+ Hits         188608   189321     +713     
+ Misses        61468    61026     -442     
+ Partials      16007    15736     -271     

Impacted Files	Coverage Δ
...r/src/main/java/org/opensearch/tasks/TaskInfo.java	90.62% <0.00%> (ø)

... and 436 files with indirect coverage changes

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/16133/
• CommitID: 1339c9e