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-lock.json

@@ -16,8 +16,6 @@
         "@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",
@@ -1953,19 +1951,6 @@
         "supercluster": "^8.0.1"
       }
     },
-    "node_modules/@mdi/js": {
-      "version": "7.4.47",
-      "resolved": "https://registry.npmjs.org/@mdi/js/-/js-7.4.47.tgz",
-      "integrity": "sha512-KPnNOtm5i2pMabqZxpUz7iQf+mfrYZyKCZ8QNz85czgEt7cuHcGorWfdzUMWYA0SD+a6Hn4FmJ+YhzzzjkTZrQ=="
-    },
-    "node_modules/@mdi/react": {
-      "version": "1.6.1",
-      "resolved": "https://registry.npmjs.org/@mdi/react/-/react-1.6.1.tgz",
-      "integrity": "sha512-4qZeDcluDFGFTWkHs86VOlHkm6gnKaMql13/gpIcUQ8kzxHgpj31NuCkD8abECVfbULJ3shc7Yt4HJ6Wu6SN4w==",
-      "dependencies": {
-        "prop-types": "^15.7.2"
-      }
-    },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.5",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",