Grid: In RTL languages, the resize handles point in the opposite dire…

…ction (WordPress#64995)

* Fixed the RTL resizing issue

* Removed comment, fix spacing

* Added else condition

* Revert "Fixed the RTL resizing issue"

This reverts commit 39cfde5.

* Updated left and right values for justification

Co-authored-by: rohitmathur-7 <rohitmathur7@git.wordpress.org>
Co-authored-by: t-hamano <wildworks@git.wordpress.org>
Co-authored-by: andrewserong <andrewserong@git.wordpress.org>

packages/block-editor/src/components/grid/grid-item-resizer.js

@@ -73,8 +73,8 @@ function GridItemResizerInner( {
 	}, [ blockElement, rootBlockElement ] );
 
 	const justification = {
-		right: 'flex-start',
-		left: 'flex-end',
+		right: 'left',
+		left: 'right',
 	};
 
 	const alignment = {