Move style and store initialization to mount method (#1351)

This is in order to reduce warnings in the console for React 19 usage.
This removes the deprecated defaultProp and also move all the store
initialization logic out of the App.tsx file, keeping it a lot more
clean.
It removes the `debug` flag from the supported urls along with the
`localport` and `localhost`, which I'm not sure if and how they were
ever used.
The tests are using the `style` url, so I think it is covered in terms
of tests.
It also improves some typings along the project.
It removes some callbacks from the code and moves to use promises.

## Launch Checklist

 - [x] Briefly describe the changes in this PR.
- [x] Include before/after visuals or gifs if this PR includes visual
changes.
 - [x] Write tests for all new functionality.
 - [ ] Add an entry to `CHANGELOG.md` under the `## main` section.


Before:
<img width="1263" height="439" alt="image"
src="https://github.com/user-attachments/assets/1988c4f7-39de-4fd2-b6da-b4736abc0441"
/>

After:
<img width="1263" height="203" alt="image"
src="https://github.com/user-attachments/assets/28079e6d-9de7-40a1-9869-01a0876ca79f"
/>

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Bart Louwers <bart.louwers@gmail.com>

CHANGELOG.md

@@ -17,6 +17,7 @@
 - Refactor Field components to use arrow function syntax
 - Replace react-autocomplete with Downshift in the autocomplete component
 - Add LocationIQ as supported map provider with access token field and gallery style
+- Revmove support for `debug` and `localport` url parameters
 - _...Add new stuff here..._
 
 ### 🐞 Bug fixes