Fixing deadlock, and not cleaning up on purpose now (project-chip#35982)

* Fixing deadlock, and not cleaning up on purpose now

* Adding this log back

* Restyled by clang-format

---------

Co-authored-by: Restyled.io <commits@restyled.io>

Author: woody-apple

src/darwin/Framework/CHIP/MTRDeviceControllerFactory.mm

@@ -73,12 +73,7 @@
 static bool sExitHandlerRegistered = false;
 static void ShutdownOnExit()
 {
-    // Depending on the structure of the software, this code might execute *after* the main autorelease pool has exited.
-    // Therefore, it needs to be enclosed in its own autorelease pool.
-    @autoreleasepool {
-        MTR_LOG("ShutdownOnExit invoked on exit");
-        [[MTRDeviceControllerFactory sharedInstance] stopControllerFactory];
-    }
+    // Don't do anything here, period
 }
 
 @interface MTRDeviceControllerFactoryParams ()
@@ -441,8 +436,8 @@ - (void)stopControllerFactory
 {
     [self _assertCurrentQueueIsNotMatterQueue];
 
-    while ([_controllers count] != 0) {
-        [_controllers[0] shutdown];
+    for (MTRDeviceController * controller in [_controllers copy]) {
+        [controller shutdown];
     }
 
     dispatch_sync(_chipWorkQueue, ^{

src/darwin/Framework/CHIP/MTRDevice_XPC.mm

@@ -250,7 +250,8 @@ - (void)_invokeCommandWithEndpointID:(NSNumber *)endpointID
 
     @try {
         [[xpcConnection remoteObjectProxyWithErrorHandler:^(NSError * _Nonnull error) {
-            MTR_LOG_ERROR("Error: %@", error);
+            MTR_LOG_ERROR("Invoke error: %@", error);
+            completion(nil, [NSError errorWithDomain:MTRErrorDomain code:MTRErrorCodeGeneralError userInfo:nil]);
         }] deviceController:[[self deviceController] uniqueIdentifier]
                                  nodeID:[self nodeID]
             invokeCommandWithEndpointID:endpointID
@@ -263,7 +264,8 @@ - (void)_invokeCommandWithEndpointID:(NSNumber *)endpointID
             serverSideProcessingTimeout:serverSideProcessingTimeout
                              completion:completion];
     } @catch (NSException * exception) {
-        MTR_LOG_ERROR("Exception sending XPC messsage: %@", exception);
+        MTR_LOG_ERROR("Exception sending XPC message: %@", exception);
+        completion(nil, [NSError errorWithDomain:MTRErrorDomain code:MTRErrorCodeGeneralError userInfo:nil]);
     }
 }