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1f9e30276a
Specifically the type checker to work around interface types not having isolation introduces casts into the AST that enrich the AST with isolation information. Part of that information is Sendable. This means that we can sometimes lose due to conversions that a function is actually Sendable. To work around this, we today suppress those errors when they are emitted (post 6.2, we should just change their classification as being Sendable... but I don't want to make that change now). This change just makes the pattern matching for these conversions handle more cases so that transfernonsendable_closureliterals_isolationinference.swift now passes.