Added new non-selectable selector exclusions to fix arrow key events, fixed the simulated clicking of a row and fixed the conflict between enter key form submit and enter key row selection

Added bootstrap dropdown event triggers to invoke the open and close methods of the dropdown, allowing for the binding of array key events

Added #17465 fix entry to CHANGELOG

Fixed multi-dropdown selected row index conflict

Fixed whitespace diff

Added padding to the dropdown content iterative scroll as well as new conditional scrolls to scroll all the way to the top when the first item of a list is selected and to scroll all the way to the bottom when the last item of a list is selected

Added conditionals to the enable and disable autocomplete methods to stop multiple invocations without any enabled/disabled state change

Fixes some incorrect firing of requests. The dropdown box was invoking a new query every time it closed and the GitLabDropdownRemote callback was invoking a new query which was causing the dropdown double render issue.

Added .selectable css class to dropdown list items that are not dividers or headers and altered selectors to account for that. Moved scroll padding Number to variable.

Removed unused method

Started Dropdown tests

Added fixture and began first test

Almost finished, navigation done, action and close needed

YAY. TESTS DONE.

Altered test and fixed click

started removing selectable class use

Fixed as reviewed

altered selection method

Fixed autocomplete shutting dropdown on arrow key use

patched XSS vulns

updated tests

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Added click fixes