Backport "Lint function arrow intended context function" to 3.3 LTS #577
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Fixes scala#21187 If a function literal `x => body` has an expected type `X ?=> ?` then maybe they intended to write `x ?=> body`. As shown in the test, maybe types will misalign in other ways to emit warnings.
Fixes scala#21187 If a function literal `x => body` has an expected type `X ?=> ?` then maybe they intended to write `x ?=> body`. As shown in the test, maybe types will misalign in other ways to emit warnings. [Cherry-picked e0ff329][modified]
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Backports scala#23847 to the 3.3.7.
PR submitted by the release tooling.
[skip ci]