Web [Charts]: Use wildcard `Popover` instead of `floating-ui`

Created by: vovakulikov

Context

Prior to this PR, we used the floating-ui tooltip for the chart tooltip component. Since we have our own Popover component as a part of the wildcard package this PR simply replaces the floating-ui with our Popover.

Test plan

• Make sure that all demos for the /charts/line-chart look good and don't have any problem with the tooltip