draft

This PR:

• closes Mapped enums with create function seem to not work correctly #28591
• adds a new functional test, issues/28591-mapped-enums
  • before the commits that implemented the fix, the test would fail with:

      ● typescript › issues.28591-mapped-enums.test (provider=postgresql, js_pg)/test.ts
    
        assert.fail(received, expected)
    
        Message:
          Type '"PENDING"' is not assignable to type 'SuggestionStatus | undefined'. Did you mean '"pending"'? At: tests/functional/issues/28591-mapped-enums/.generated/issues.28591-mapped-enums.test (provider=postgresql, js_pg)/test.ts:13:11
    
          70 |     for (const checkPath of keys(suiteChecks)) {
          71 |       if (checkPath.includes(path.dirname(suiteFilePath))) {
        > 72 |         assert.fail(suiteChecks[checkPath])
             |                ^
          73 |       }
          74 |     }
          75 |   })
    
          at typescript/tests.ts:72:16
    

/integration