Fix (frontend): Respect the "Enable Informational Popovers" setting

[lstein]

Summary

Although there is a setting named "Enable Informational Popovers," it seems to have no effect on the front end's tooltips. This is particularly annoying on tablet systems which do not have a hover event. On these systems the InvokeAI tooltips pop up and cannot easily be removed, often obscuring user interface elements.

This PR implements a new IAITooltip component which conditionally shows tooltips depending on the Enable Popovers setting.

I used Copilot to find all instances of tooltips and rewrite them. I then manually checked each user element I could find. However, it is possible that tooltips may have been missed. Please report them.

Related Issues / Discussions

QA Instructions

1. With "Enable Informational Popovers" active, confirm that the tooltips appear as per usual.
2. With "Enable Informational Popovers" deactivated, confirm that no tooltips appear.

Merge Plan

Simple merge.

Checklist

• The PR has a short but descriptive title, suitable for a changelog
• Tests added / updated (if applicable)
• ❗Changes to a redux slice have a corresponding migration
• Documentation added / updated (if applicable)
• Updated What's New copy (if doing a release after this PR)