[Performance] Remove unused event triggers and listeners

Problem/Motivation

After the off-canvas dialog is created, it executes the following function:

afterCreate({ $element, settings }) {
  const eventData = { settings, $element, offCanvasDialog: this };

  $element
    .on('dialogresize.off-canvas', eventData, debounce(Drupal.offCanvas.bodyPadding, 100))
    .on('dialogContentResize.off-canvas', eventData, Drupal.offCanvas.handleDialogResize)
    .on('dialogContentResize.off-canvas', eventData, debounce(Drupal.offCanvas.bodyPadding, 100))
    .trigger('dialogresize.off-canvas');

  Drupal.offCanvas.getContainer($element).attr(`data-offset-${Drupal.offCanvas.getEdge()}`, '');

  $(window)
    .on('resize.off-canvas scroll.off-canvas', eventData, debounce(Drupal.offCanvas.resetSize, 100))
    .trigger('resize.off-canvas');
}

Two resize events are fired in rapidly,

// Firstly, the script triggered:
.trigger('dialogresize.off-canvas');

// And at the end of script, it triggerred:
.trigger('resize.off-canvas');

While the off-canvas is also designed to work with window.reseize events, I don't see any reason we need to fire dialogresize.off-canvas at the early stage. Two events caused Drupal.offCanvas.bodyPadding to be executed twice even with debounce.

These event loops might cause random test fails.

Proposed resolution

Remove excess event triggering.