[Backport 2.x] Change setting allowing size > 0 queries in request cache to be an int threshold

[opensearch-trigger-bot[bot]]

Backport 2ac64a6262973383d71f3e3ee037e4d267c3b592 from #16570.

[github-actions[bot]]

:white_check_mark: Gradle check result for b1ebad17c657aa36f34faa7c2e6cbd8d6a9e0a81: SUCCESS

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 71.84%. Comparing base (1130cd5) to head (b1ebad1). Report is 4 commits behind head on 2.x.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 2.x #16688 +/- ## ============================================ - Coverage 71.89% 71.84% -0.05% + Complexity 65527 65416 -111 ============================================ Files 5314 5314 Lines 305210 305217 +7 Branches 44473 44474 +1 ============================================ - Hits 219416 219269 -147 - Misses 67578 67647 +69 - Partials 18216 18301 +85 ```

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