Fix mobile horizontal scrollbar. (#36567)

Author: jasmussen

packages/block-editor/src/components/inner-blocks/style.scss

@@ -4,16 +4,10 @@
 	&::after {
 		content: "";
 		position: absolute;
-		top: -$block-padding;
-		right: -$block-padding;
-		bottom: -$block-padding;
-		left: -$block-padding;
+		top: 0;
+		right: 0;
+		bottom: 0;
+		left: 0;
 		z-index: z-index(".block-editor-block-list__layout.has-overlay::after");
 	}
 }
-
-// On fullwide blocks, don't go beyond the canvas.
-[data-align="full"] .has-overlay::after {
-	right: 0;
-	left: 0;
-}