Update distributed tests for diagnostic change

Author: DougGregor

test/Distributed/distributed_protocol_isolation.swift

@@ -18,9 +18,9 @@ protocol DistProtocol: DistributedActor {
   // FIXME(distributed): avoid issuing these warnings, these originate from the call on the DistProtocol where we marked this func as dist isolated,
   func local() -> String
   // (the note appears a few times, because we misuse the call many times)
-  // expected-note@-2{{calls to instance method 'local()' from outside of its actor context are implicitly asynchronous}}
-  // expected-note@-3{{calls to instance method 'local()' from outside of its actor context are implicitly asynchronous}}
-  // expected-note@-4{{calls to instance method 'local()' from outside of its actor context are implicitly asynchronous}}
+  // expected-note@-2{{distributed actor-isolated instance method 'local()' declared here}}
+  // expected-note@-3{{distributed actor-isolated instance method 'local()' declared here}}
+  // expected-note@-4{{distributed actor-isolated instance method 'local()' declared here}}
 
   distributed func dist() -> String
   distributed func dist(string: String) -> String
@@ -202,4 +202,4 @@ extension TacoPreparation {
   // expected-error@-1{{'distributed' function can only be declared within 'distributed actor'}}
 }
 
-distributed actor TacoWorker: DistributedTacoMaker {} // implemented in extensions
+distributed actor TacoWorker: DistributedTacoMaker {} // implemented in extensions