[Backport 3.1] Fix stopping issue when forecaster is in FORECAST_FAILURE state

[opensearch-trigger-bot]

Backport 3dd042e from #1502.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.43%. Comparing base (1e84491) to head (b752379).
Report is 1 commits behind head on 3.1.

Additional details and impacted files

@@             Coverage Diff              @@
##                3.1    #1503      +/-   ##
============================================
+ Coverage     81.41%   81.43%   +0.02%     
- Complexity     5975     5977       +2     
============================================
  Files           536      536              
  Lines         24214    24215       +1     
  Branches       2446     2446              
============================================
+ Hits          19713    19720       +7     
+ Misses         3293     3289       -4     
+ Partials       1208     1206       -2     

Flag	Coverage Δ
plugin	81.43% <100.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...ava/org/opensearch/timeseries/model/TaskState.java	100.00% <100.00%> (ø)

... and 3 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.