profileSelector: Prevent wizard refresh on Enter key in OpenSCAP profile selector

Added event.preventDefault() in onKeyDown handler to stop default form
submission behavior when hitting Enter in the typeahead filter.
Also implemented auto-selection of single filtered results on Enter.

src/Components/CreateImageWizard/steps/Oscap/components/ProfileSelector.tsx

@@ -274,6 +274,27 @@ const ProfileSelector = () => {
     }
   };
 
+  const onKeyDown = (event: React.KeyboardEvent) => {
+    if (event.key === 'Enter') {
+      event.preventDefault();
+      
+      if (!isOpen) {
+        setIsOpen(true);
+      } else if (selectOptions.length === 1) {
+        const singleProfile = selectOptions[0];
+        const selection: OScapSelectOptionValueType = {
+          profileID: singleProfile.id,
+          toString: () => singleProfile.name || '',
+        };
+        
+        setInputValue(singleProfile.name || '');
+        setFilterValue('');
+        applyChanges(selection);
+        setIsOpen(false);
+      }
+    }
+  };
+
   const applyChanges = (selection: OScapSelectOptionValueType) => {
     if (selection.profileID === undefined) {
       // handle user has selected 'None' case
@@ -337,6 +358,7 @@ const ProfileSelector = () => {
           value={profileID ? profileID : inputValue}
           onClick={onInputClick}
           onChange={onTextInputChange}
+          onKeyDown={onKeyDown}
           autoComplete="off"
           placeholder="None"
           isExpanded={isOpen}