[web] Refactor MessageTooltip component

Summary:
Major refactor of MessageTooltip that simplifies the component leaving only necessary properties and removing positioning logic out of the component

The new component:

Test Plan: Flow; Tested with the rest of diffs stack.

Reviewers: tomek, atul, abosh

Reviewed By: tomek, abosh

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D4912