8270216: [macOS] Update named used for Java run loop mode

Reviewed-by: serb

Author: prrace

src/java.desktop/macosx/native/libosxapp/ThreadUtilities.m

@@ -33,7 +33,7 @@
 JavaVM *jvm = NULL;
 static JNIEnv *appKitEnv = NULL;
 static jobject appkitThreadGroup = NULL;
-static NSString* JavaRunLoopMode = @"javaRunLoopMode";
+static NSString* JavaRunLoopMode = @"AWTRunLoopMode";
 static NSArray<NSString*> *javaModes = nil;
 
 static inline void attachCurrentThread(void** env) {