Add css unit to styles.spacing.padding value to regain default paddings on menu overlay (#8657)

Author: iamtakashi

poesis/theme.json

@@ -519,10 +519,10 @@
 		"spacing": {
 			"blockGap": "1.5rem",
 			"padding": {
-				"bottom": "0",
-				"left": "0",
-				"right": "0",
-				"top": "0"
+				"bottom": "0px",
+				"left": "0px",
+				"right": "0px",
+				"top": "0px"
 			}
 		},
 		"typography": {