Adding windowing flags to WMShell

- Also only provide the system perf hinter if the VRR flag is enabled

Bug: 300019131
Test: Builds
Change-Id: I2938b85ca7285d986fe6bbfe134a0d05d38378c9
diff --git a/libs/WindowManager/Shell/Android.bp b/libs/WindowManager/Shell/Android.bp
index fd4522e..5ad144d 100644
--- a/libs/WindowManager/Shell/Android.bp
+++ b/libs/WindowManager/Shell/Android.bp
@@ -160,6 +160,7 @@
         "kotlinx-coroutines-core",
         "iconloader_base",
         "com_android_wm_shell_flags_lib",
+        "com.android.window.flags.window-aconfig-java",
         "WindowManager-Shell-proto",
         "dagger2",
         "jsr330",