fix: use inputValue() for getProperty('value') in WebElement

For Playwright Locator objects, getProperty('value') should use
inputValue() method instead of evaluate() to get the current value
of input elements after fill() is called.

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

Author: DavertMik

lib/element/WebElement.js

@@ -82,6 +82,10 @@ class WebElement {
   async getProperty(name) {
     switch (this.helperType) {
       case 'playwright':
+        // For Locator objects, use inputValue() for the 'value' property
+        if (name === 'value' && this.element.inputValue) {
+          return this.element.inputValue()
+        }
         return this.element.evaluate((el, propName) => el[propName], name)
       case 'webdriver':
         return this.element.getProperty(name)