Memory cleanup and optimizations

- Returns an empty list when there's not registered plugins, thus preventing the creation of spurious iterator objects

- Inline `Godot#getRotatedValues(...)` given it only had a single caller. This allows to remove the allocation of a float array on each call and replace it with float variables

- Disable sensor events by default. Sensor events can fired at 10-100s Hz taking cpu and memory resources. Now the use of sensor data is behind a project setting allowing projects that have use of it to enable it, while other projects don't pay the cost for a feature they don't use

- Create a pool of specialized input `Runnable` objects to prevent spurious, unbounded `Runnable` allocations

- Disable showing the boot logo for Android XR projects

- Delete locale references of jni strings

platform/android/java_godot_lib_jni.cpp

@@ -51,6 +51,7 @@
 #include "core/config/project_settings.h"
 #include "core/input/input.h"
 #include "main/main.h"
+#include "servers/xr_server.h"
 
 #ifdef TOOLS_ENABLED
 #include "editor/editor_settings.h"
@@ -266,7 +267,18 @@ JNIEXPORT jboolean JNICALL Java_org_godotengine_godot_GodotLib_step(JNIEnv *env,
 	}
 
 	if (step.get() == STEP_SHOW_LOGO) {
-		Main::setup_boot_logo();
+		bool xr_enabled;
+		if (XRServer::get_xr_mode() == XRServer::XRMODE_DEFAULT) {
+			xr_enabled = GLOBAL_GET("xr/shaders/enabled");
+		} else {
+			xr_enabled = XRServer::get_xr_mode() == XRServer::XRMODE_ON;
+		}
+		// Unlike PCVR, there's no additional 2D screen onto which to render the boot logo,
+		// so we skip this step if xr is enabled.
+		if (!xr_enabled) {
+			Main::setup_boot_logo();
+		}
+
 		step.increment();
 		return true;
 	}