[native] Moved fixed tooltip to the bottom of chat window

Summary:
Moved the fixed tooltip to the bottom of the chat window. Will be adding the more button/polishing animation in upcoming diffs

Depends on D5460
Linear Task: ENG-2037
Design: Figma

Test Plan:
Please watch the demo video to see how all the tooltips now work with the new changes I made

Reviewers: atul, rohan

Reviewed By: atul, rohan

Subscribers: ashoat, tomek, atul, abosh

Differential Revision: https://phab.comm.dev/D5497