🍒[5.7][Distributed] Prevent overloading on async in distributed methods, for wire compat #59881
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Description: In order to be better for wire compatibility, we actually encode the
YaK
(async throws) distributed thunk based names for the distributed accessible functions. This currently leads to crashes if one does overload on "just asyncness". After discussing if we should allow these overloads (#59831) or ban them (this PR) we came to the conclusion this is better for distributed calls. This PR bans async overloading on distributed methods.Risk: Low, prevents a crash by preventing bad declarations.
Review by: @DougGregor
Testing: PR testing
Original PR: #59880
Radar: rdar://96179707