Improve the performance of `org-set-tags-command` on large `org-tag-alist`

[stardiviner]

I have a large `org-tag-alist` value that contains about ~7000 tags.

When I press [C-c C-q] `org-set-tags-command`. Emacs suspends a long time.

Here are the profiler reports in the attachments.

I hope this can be improved the performance.

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