Administration: Ensure client-side templates are only detected when they're correctly associated with a script tag.

Merges [61886] to the 6.9 branch.
Props johnbillion, peterwilsoncc, jorbin.



git-svn-id: https://develop.svn.wordpress.org/branches/6.9@61897 602fd350-edb4-49c9-b593-d223f7449a82

Author: audrasjb

src/js/_enqueues/wp/util.js

@@ -36,10 +36,11 @@ window.wp = window.wp || {};
 			};
 
 		return function ( data ) {
-			if ( ! document.getElementById( 'tmpl-' + id ) ) {
+			var el = document.querySelector( 'script#tmpl-' + id );
+			if ( ! el ) {
 				throw new Error( 'Template not found: ' + '#tmpl-' + id );
 			}
-			compiled = compiled || _.template( $( '#tmpl-' + id ).html(),  options );
+			compiled = compiled || _.template( $( el ).html(), options );
 			return compiled( data );
 		};
 	});