Improve documentation on forcing right-to-left layout in Control

Author: Calinou

doc/classes/Control.xml

@@ -1372,7 +1372,7 @@
 			Automatic layout direction, determined from the parent control layout direction.
 		</constant>
 		<constant name="LAYOUT_DIRECTION_APPLICATION_LOCALE" value="1" enum="LayoutDirection">
-			Automatic layout direction, determined from the current locale. Right-to-left layout direction is automatically used for languages that require it such as Arabic and Hebrew., but only if a valid translation file is loaded for the given language. For all other languages (or if no valid translation file is found by Godot), left-to-right layout direction is used. If using [TextServerFallback] ([member ProjectSettings.internationalization/rendering/text_driver]), left-to-right layout direction is always used regardless of the language.
+			Automatic layout direction, determined from the current locale. Right-to-left layout direction is automatically used for languages that require it such as Arabic and Hebrew, but only if a valid translation file is loaded for the given language (unless said language is configured as a fallback in [member ProjectSettings.internationalization/locale/fallback]). For all other languages (or if no valid translation file is found by Godot), left-to-right layout direction is used. If using [TextServerFallback] ([member ProjectSettings.internationalization/rendering/text_driver]), left-to-right layout direction is always used regardless of the language. Right-to-left layout direction can also be forced using [member ProjectSettings.internationalization/rendering/force_right_to_left_layout_direction].
 		</constant>
 		<constant name="LAYOUT_DIRECTION_LTR" value="2" enum="LayoutDirection">
 			Left-to-right layout direction.

doc/classes/ProjectSettings.xml

@@ -1480,7 +1480,7 @@
 			The expansion ratio to use during pseudolocalization. A value of [code]0.3[/code] is sufficient for most practical purposes, and will increase the length of each string by 30%.
 		</member>
 		<member name="internationalization/pseudolocalization/fake_bidi" type="bool" setter="" getter="" default="false">
-			If [code]true[/code], emulate bidirectional (right-to-left) text when pseudolocalization is enabled. This can be used to spot issues with RTL layout and UI mirroring that will crop up if the project is localized to RTL languages such as Arabic or Hebrew.
+			If [code]true[/code], emulate bidirectional (right-to-left) text when pseudolocalization is enabled. This can be used to spot issues with RTL layout and UI mirroring that will crop up if the project is localized to RTL languages such as Arabic or Hebrew. See also [member internationalization/rendering/force_right_to_left_layout_direction].
 		</member>
 		<member name="internationalization/pseudolocalization/override" type="bool" setter="" getter="" default="false">
 			Replace all characters in the string with [code]*[/code]. Useful for finding non-localizable strings.
@@ -1502,7 +1502,7 @@
 			[b]Note:[/b] This property is only read when the project starts. To toggle pseudolocalization at run-time, use [member TranslationServer.pseudolocalization_enabled] instead.
 		</member>
 		<member name="internationalization/rendering/force_right_to_left_layout_direction" type="bool" setter="" getter="" default="false">
-			Force layout direction and text writing direction to RTL for all controls.
+			Force layout direction and text writing direction to RTL for all controls, even if the current locale is intended to use a left-to-right layout and text writing direction. This should be enabled for testing purposes only. See also [member internationalization/pseudolocalization/fake_bidi].
 		</member>
 		<member name="internationalization/rendering/root_node_auto_translate" type="bool" setter="" getter="" default="true">
 			If [code]true[/code], root node will use [constant Node.AUTO_TRANSLATE_MODE_ALWAYS], otherwise [constant Node.AUTO_TRANSLATE_MODE_DISABLED] will be used.