Rework UI of IconDialog to use Material3

### Description
Create a new version of the `IconDialog` that works with Material3, deprecate the old one that uses Material2 or remove it if nothing uses it anymore.

For more context check https://github.com/home-assistant/android/pull/7052#discussion_r3553693544

Start by locating IconDialog and checking its current Material2 implementation and usages. Review the linked pull request discussion for the intended Material3 behavior; done means a Material3-compatible IconDialog exists and the old version is deprecated or removed if unused.

Written by the indexing model from the issue text.