Function whenFocus

whenFocus(
elementSource: HTMLElement | SVGElement,
ignoreDoc?: boolean,
): Promise<boolean>
Returns a promise that resolves when the specified element gains focus.
Parameters
- elementSource: HTMLElement | SVGElement
  The element to check for focus.
- ignoreDoc: boolean = false
  Whether to ignore the document's focus state.
Returns Promise<boolean>
A promise that resolves to true if the element gains focus, false otherwise.