Selector: Bring back querySelectorAll shortcut usage

Due to a faulty IE 8 workaround removal, the fast path qSA mode was skipped
when jQuery's find was called on an element node - i.e. in most cases. 😱

Ref gh-4395
Closes gh-4452

src/selector.js

@@ -218,8 +218,7 @@ function find( selector, context, results, seed ) {
 
 			// Take advantage of querySelectorAll
 			if ( !nonnativeSelectorCache[ selector + " " ] &&
-				( !rbuggyQSA || !rbuggyQSA.test( selector ) ) &&
-				nodeType !== 1 ) {
+				( !rbuggyQSA || !rbuggyQSA.test( selector ) ) ) {
 
 				newSelector = selector;
 				newContext = context;