Fixed an issue with mapped property symbol not displaying added `| undefined` when its origin symbol was optional#59957

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Andarist wants to merge 12 commits intomicrosoft:mainfrom

Andarist:fix/mapped-prop-undefined-display

Commits on Sep 13, 2024

Fixed an issue with mapped property symbol not displaying added `| undefined` when its origin symbol was optional
Andarist
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add an extra test case
Andarist
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Commits on Nov 4, 2024

Commits on Nov 19, 2024

fix the fix
Andarist
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Commits on Nov 20, 2024

Commits on Apr 26, 2025

Commits on Aug 23, 2025

Commits on Dec 5, 2025

Merge remote-tracking branch 'origin/main' into fix/mapped-prop-undefined-display
Andarist
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