Feat(DropdownMenu): submenu delay

[Denis Saripov]

Feature request: add to DropdownMenu component debounce logic for this behavior:

submenudelay-4.mp4

Api proposal:
<DropdownMenu popupCloseDebounce={500} />

[Mr.Dr.Professor Patrick]

@axtk Hey! What do you think about it?

[axtk]

I'll look into this in a while