Fix Puppeteer grabAttributeFrom returning a CSSStyleDeclaration for style (#5777)

* Initial plan

* Apply remaining changes

Co-authored-by: kobenguyent <7845001+kobenguyent@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: kobenguyent <7845001+kobenguyent@users.noreply.github.com>

Author: Copilot

lib/helper/Puppeteer.js

@@ -2271,7 +2271,7 @@ class Puppeteer extends Helper {
     const els = await this._locate(locator)
     const array = []
     for (let index = 0; index < els.length; index++) {
-      const a = await this._evaluateHandeInContext((el, attr) => el[attr] || el.getAttribute(attr), els[index], attr)
+      const a = await this._evaluateHandeInContext((el, attr) => (attr === 'style' ? el.getAttribute(attr) : el[attr] || el.getAttribute(attr)), els[index], attr)
       array.push(a)
     }
     return array

test/helper/webapi.js

@@ -1469,6 +1469,12 @@ export function tests() {
       assert.equal(val, 'oldfag')
     })
 
+    it('should grab full style attribute', async () => {
+      await I.amOnPage('/form/example1')
+      const style = await I.grabAttributeFrom('#LoginForm_username_em_', 'style')
+      assert.equal(style, 'display:none')
+    })
+
     it('should grab attribute from element', async () => {
       await I.amOnPage('/search')
       const val = await I.grabAttributeFrom(