Fix compatibility with jquery-3.4.0

[borisson]

See issue #5485

This pull request includes a

• Bug fix
• New feature
• Translation

If this is related to an existing ticket, include a link to it as well.
#5485

[mkutlu]

This was not solved problem for IE, it just work for chrome.

[blikblum]

This was not solved problem for IE, it just work for chrome.

I tested with IE 11 and is working

[kevin-brown]

Hi there, and thanks for the pull request to Select2.

Since this is fixing something which has already broken, we prefer it if the pull request includes a failing test case. With a failing test case, we don't need to worry about breaking this specific case again in the future, which saves us all a lot of time and trouble.

[borisson]

@kevin-brown I'm sorry - I won't be able to include a testcase. We've since switched to a different library so I won't get company time and I maintain my own project(s) so most of my limited free time goes to that. I understand why you'd want a test - sorry I won't be able to provide that.

[kevin-brown]

Should ultimately be fixed by #5558.