Unite icons (#1374)

## Launch Checklist

This removes the `@mdi` (material design icons) package and uses the
icons from `react-icons`.
The icons are not exactly the same, but have the same idea behind them.

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

Main changes can be found below.
Before:
<img width="580" height="780" alt="image"
src="https://github.com/user-attachments/assets/e3d5fc8a-bd59-48fe-bdae-31bb290749c8"
/>


After:

<img width="580" height="780" alt="image"
src="https://github.com/user-attachments/assets/bacdbdba-9e73-4bef-bd30-26fe946269c1"
/>

---------

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

package.json

@@ -31,8 +31,6 @@
     "@maplibre/maplibre-gl-geocoder": "^1.9.0",
     "@maplibre/maplibre-gl-inspect": "^1.7.1",
     "@maplibre/maplibre-gl-style-spec": "^23.3.0",
-    "@mdi/js": "^7.4.47",
-    "@mdi/react": "^1.6.1",
     "@prantlf/jsonlint": "^16.0.0",
     "array-move": "^4.0.0",
     "buffer": "^6.0.3",