Map card: show a tooltip for the last point too

[ildar170975]

In this PR tooltips with "datetime" were added for a Map:
#14515

Looks like this (image from the PR):
https://user-images.githubusercontent.com/32912880/205755258-42a70201-3cbc-443f-a75c-5c558e355798.gif

But for the last point a "datetime" tooltip is not displayed.
A name of the entity is displayed instead (after some delay) - let's call it "name" tooltip:

I proposed to display a "datetime" tooltip for the last point too:
#14515 (comment)

Two questions are here:

1.How this "datetime" tooltip should be displayed?
Will it be a separate tooltip?
En example was provided here:

Will it be combined with a "name" tooltip?
Note that this "name" tooltip looks differently and is displayed after some delay.
So, displaying a "datetime" info on the "name" tooltip could be a bad idea...

2.What time will this tooltip display?
Imho it should display a time of arrival at this point - i.e. not the "last seen on this point" time.