autocomplete enhancement fixes (#126)

Author: chikara1608

lib/rules/autocomplete-a11y-matches.js

@@ -92,6 +92,14 @@ function quantityField(node) {
   });
 }
 
+function isReadOnly(node) {
+  return node.hasAttribute('readonly');
+}
+
+function isCombobox(node) {
+  return node.getAttribute('role') === 'combobox';
+}
+
 function autocompleteA11yMatches(node, virtualNode) {
   const a11yEngineFlag = true;
   /* the flag is used to tell autocomplete matcher that it is being called 
@@ -100,7 +108,9 @@ function autocompleteA11yMatches(node, virtualNode) {
   return (
     autocompleteMatches(node, virtualNode, a11yEngineFlag) &&
     !nodeIsASearchFunctionality(node) &&
-    !quantityField(node)
+    !quantityField(node) &&
+    !isReadOnly(node) &&
+    !isCombobox(node)
   );
 }