[6.2] Sema: Fix leading dot with protocol composition or parameterized protocol contextual type #82758
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…ocol contextual type - Fixes swiftlang#60552. - Fixes rdar://problem/99699879.
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slavapestov
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bnbarham
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Jul 3, 2025
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6.2 cherry-pick of #82757
.foowhere the contextual type was a protocol composition or parameterized protocol due to unhandled case.isConstraintType()would have crashed, as demonstrated by the test case. I believe this fix is completely safe.