issue/3385844: Add API call for lang settings RouteCachingLanguageTest

Closes #3385844

added 1231 commits

• b1148a95...ae308e40 - 1230 commits from branch project:11.x
• 6bc50e9d - issue/3385844: Added API call RouteCachingLanguageTest

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added 1 commit

• 4f257b27 - issue/3385844: Fixing pipeline test failure.

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added 1 commit

• c50e78f7 - issue/3385844: fixing test failure.

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changed title from issue/3385844: AddAPI call for lang settings RouteCachingLanguage to issue/3385844: Add API call for lang settings RouteCachingLanguageTest

closed