fix: use browser.keys for WebDriver typeText/selectAll

webdriverio keys() lives on browser, not element. Route typeText and
selectAllAndDelete through helper.browser.keys() for the WebDriver
path so rich-text scenarios (hidden-textarea + iframe editors) work.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: DavertMik

lib/element/WebElement.js

@@ -307,7 +307,7 @@ class WebElement {
       case 'puppeteer':
         return this.helper.page.keyboard.type(s, options)
       case 'webdriver':
-        return this.element.keys(s.split(''))
+        return this.helper.browser.keys(s)
       default:
         throw new Error(`Unsupported helper type: ${this.helperType}`)
     }
@@ -335,11 +335,13 @@ class WebElement {
         }
         await this.helper.page.keyboard.press('Backspace')
         return
-      case 'webdriver':
-        await this.element.keys(['Control', 'a'])
-        await this.element.keys(['Meta', 'a'])
-        await this.element.keys(['Backspace'])
+      case 'webdriver': {
+        const b = this.helper.browser
+        await b.keys(['Control', 'a']).catch(() => {})
+        await b.keys(['Meta', 'a']).catch(() => {})
+        await b.keys(['Backspace'])
         return
+      }
       default:
         throw new Error(`Unsupported helper type: ${this.helperType}`)
     }