Remove jQuery from FunctionalJavascript tests

Adding parent

tom konda → made their first commit to this issue’s fork.

I removed more than half of jQuery code from FunctionalJavascript tests.
But several code are not removed because of following reasons.

1. jQuery specific pseudo selector
   Some tests include jQuery pseudo selector such as :focus, :visible and :animated.
   :visible is not removed in 📌 Refactor (if feasible) uses of the jQuery sizzle to use vanillaJS Needs work .
2. jQuery.data()
   The Drupal\FunctionalJavascriptTests\Ajax\CommandsTest includes jQuery.data().
   This function is tried to remove from core JavaScript 📌 Refactor (if feasible) uses of the jQuery data function to use Vanilla/native Active , now still go on.
3. Intentional jQuery usage
   The Drupal\FunctionalJavascriptTests\Dialog\DialogDeprecationsTest intents on to be triggered deprecated jQuery event and the Drupal\FunctionalJavascriptTests\Ajax\AjaxText checks output of JavaScript Ajax theming functions which return jQuery object.