Fix conditional check bug.

The power mode change event should only be filtered if launch boost is
disabled. That can only occur when the device supports battery saver and
has a battery saver state machine instance. Thus, if the battery saver
state machine doesn't exist, the power mode change event should not be
filtered.

Bug: 315728239
Bug: 317053395
Test: N/A
Change-Id: I83057cbfa53725b5fc19cc1ca4096b8b4b93d4dd
diff --git a/services/core/java/com/android/server/power/PowerManagerService.java b/services/core/java/com/android/server/power/PowerManagerService.java
index 2128c991..8956623d 100644
--- a/services/core/java/com/android/server/power/PowerManagerService.java
+++ b/services/core/java/com/android/server/power/PowerManagerService.java
@@ -4405,8 +4405,8 @@
 
     private boolean setPowerModeInternal(int mode, boolean enabled) {
         // Maybe filter the event.
-        if (mBatterySaverStateMachine == null || (mode == Mode.LAUNCH && enabled
-                && mBatterySaverStateMachine.getBatterySaverController().isLaunchBoostDisabled())) {
+        if (mode == Mode.LAUNCH && enabled && mBatterySaverStateMachine != null
+                && mBatterySaverStateMachine.getBatterySaverController().isLaunchBoostDisabled()) {
             return false;
         }
         return mNativeWrapper.nativeSetPowerMode(mode, enabled);