Function fillElement

fillElement(page: any, selectorKey: string, value: string): Promise<void>
Fills an input field with the specified value. Supports fixtures for reusable selectors.
Parameters
- page: any
- selectorKey: string
  The key of the selector in the fixtures or a raw CSS/XPath selector.
- value: string
  The text value to type/fill.
Returns Promise<void>
Example
```
When I pw fill "login.usernameField" with "testuser"
```
- Defined in backend/actions/interactions.ts:48