Media: Add gap between Crop apply controls when stacked.

Switch the display of the Media editor Crop controls to `flexbox` and add a gap of 4px in both column and row directions. Gives space between buttons when they are stacked.

Props presskopp, audrasjb, rishabhwp, joedolson.
Fixes #63672.

git-svn-id: https://develop.svn.wordpress.org/trunk@60517 602fd350-edb4-49c9-b593-d223f7449a82

Author: joedolson

src/wp-admin/css/media.css

@@ -901,6 +901,15 @@ border color while dragging a file over the uploader drop area */
 	display: block;
 }
 
+.imgedit-panel-active .imgedit-group-controls > .imgedit-crop-apply {
+	display: flex;
+}
+
+.imgedit-crop-apply {
+	gap: 4px;
+	flex-wrap: wrap;
+}
+
 .wp_attachment_holder .imgedit-wrap .image-editor {
 	float: right;
 	width: 250px;