Fix issue causing the Android Editor port to crash when saving a scene

In addition:
- Disable 'adb devices' query (not supported when running the editor on Android devices
- Add `move_to_trash` implementation for Android devices

platform/android/java/lib/src/org/godotengine/godot/io/file/FileAccessHandler.kt

@@ -34,6 +34,7 @@ import android.content.Context
 import android.util.Log
 import android.util.SparseArray
 import org.godotengine.godot.io.StorageScope
+import java.io.FileNotFoundException
 import java.nio.ByteBuffer
 
 /**
@@ -44,6 +45,7 @@ class FileAccessHandler(val context: Context) {
 	companion object {
 		private val TAG = FileAccessHandler::class.java.simpleName
 
+		private const val FILE_NOT_FOUND_ERROR_ID = -1
 		private const val INVALID_FILE_ID = 0
 		private const val STARTING_FILE_ID = 1
 
@@ -104,6 +106,8 @@ class FileAccessHandler(val context: Context) {
 
 			files.put(++lastFileId, dataAccess)
 			return lastFileId
+		} catch (e: FileNotFoundException) {
+			return FILE_NOT_FOUND_ERROR_ID
 		} catch (e: Exception) {
 			Log.w(TAG, "Error while opening $path", e)
 			return INVALID_FILE_ID