Cherry-pick #60402, #60440, #60616 into release-5.7#60777

Merged

DanielRosenwasser merged 3 commits intomicrosoft:release-5.7from

jakebailey:cherry-pick-pr-60616-release-5.7

Dec 17, 2024

Commits on Dec 16, 2024

Fixed syntactic nullisness semantics for comma expressions (#60402)

Andarist
authored and
jakebailey
committed
MetaProperty is possibly nullish (#60440)

RyanCavanaugh
authored and
jakebailey
committed
Fixed syntactic nullisness semantics for tagged template expressions (#60616)

Andarist
authored and
jakebailey
committed