Administration: Allow breaking long strings in <code> tags at any point, to avoid overflowing on mobile.

Props david.binda, mukesh27.
Fixes #47329.

git-svn-id: https://develop.svn.wordpress.org/trunk@45692 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/common.css

@@ -3791,6 +3791,8 @@ img {
 
 	code {
 		word-wrap: break-word;
+		word-wrap: anywhere; /* Firefox. Allow breaking long words anywhere */
+		word-break: break-word; /* Webkit: Treated similarly to word-wrap: break-word */
 	}
 
 	/* General Metabox */