swift

1336dd4c - [Concurrency] Diagnose loss of global actor isolation in async function conversions

[Concurrency] Diagnose loss of global actor isolation in async function conversions Perform `Sendable` checking on parameter/result of the function type when conversion between asynchroneous functions results in a loss of global actor isolation attribute because access would result in data crossing an isolation boundary. This is a warning until Swift language mode 6. Resolves: rdar://130168104 (cherry picked from commit a058ffc9983e4bdbf7b411cf3008998365c1f77f)