fix: use Array.from() for WebDriver element collections in selectElement

WebDriver returns element collections that aren't plain arrays, so
.map() may not work correctly. Matches the pattern used in WebDriver's
own assertOnlyOneElement.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: DavertMik

lib/helper/extras/elementSelection.js

@@ -46,7 +46,7 @@ function selectElement(els, locator, helper) {
 
   if (isStrictStep(opts, helper)) {
     if (els.length > 1) {
-      const webElements = els.map(el => new WebElement(el, helper))
+      const webElements = Array.from(els).map(el => new WebElement(el, helper))
       throw new MultipleElementsFound(locator, webElements)
     }
   }