Disable VmLauncherApp by default

Bug: 333495394
Test: adb shell pm enable com.android.virtualization.vmlauncher/.MainActivity
Change-Id: I3b1d64c2d2e2786a0b64365c6a4012001c3b15e7
diff --git a/vmlauncher_app/AndroidManifest.xml b/vmlauncher_app/AndroidManifest.xml
index 860c03f..607a895 100644
--- a/vmlauncher_app/AndroidManifest.xml
+++ b/vmlauncher_app/AndroidManifest.xml
@@ -8,6 +8,7 @@
     <application
         android:label="VmLauncherApp">
         <activity android:name=".MainActivity"
+                  android:enabled="false"
                   android:screenOrientation="landscape"
                   android:configChanges="orientation|screenSize|keyboard|keyboardHidden|navigation|uiMode"
                   android:theme="@style/MyTheme"