[DO NOT MERGE] Fix permanent denial of service via setComponentEnabledSetting

Do not update invalid component enabled settings to prevent the
malicious apps from exhausting system server memory.

Bug: 240936919
Test: atest android.security.cts.PackageManagerTest
Change-Id: I08165337895e89f13a2b9fcce1201cba9ad13d7d

services/core/java/com/android/server/pm/PackageManagerService.java

@@ -21116,6 +21116,9 @@ public class PackageManagerService extends IPackageManager.Stub
                     } else {
                         Slog.w(TAG, "Failed setComponentEnabledSetting: component class "
                                 + className + " does not exist in " + packageName);
+                        // Safetynet logging for b/240936919
+                        EventLog.writeEvent(0x534e4554, "240936919", callingUid);
+                        return;
                     }
                 }
                 switch (newState) {