We added a device profile for Quest 3 in 5.4, but you also need to make sure that you have quest3 in Project Settings → Android → Advanced APK Packaging → Extra Settings for <application> like so:
<meta-data android:name="com.oculus.supportedDevices" android:value="quest2|quest3|questpro" />
If you don’t, your Quest 3 will run in Quest 2 compatibility mode, and load the Quest 2 device profile.