chore(dev-deps): remove webpack

```
npm un @nextcloud/webpack-vue-config \
  babel-loader-exclude-node-modules-except esbuild-loader \
  mini-css-extract-plugin webpack-bundle-analyzer worker-loader
```

Signed-off-by: Grigorii K. Shartsev <me@shgk.me>

package.json

@@ -89,7 +89,6 @@
     "@nextcloud/browserslist-config": "^3.0.1",
     "@nextcloud/eslint-config": "^9.0.0-rc.5",
     "@nextcloud/stylelint-config": "^3.1.0",
-    "@nextcloud/webpack-vue-config": "^6.3.0",
     "@rspack/cli": "^1.5.8",
     "@rspack/core": "^1.5.8",
     "@rspack/plugin-node-polyfill": "^0.5.8",
@@ -98,12 +97,9 @@
     "@vitest/coverage-v8": "^3.2.4",
     "@vue/test-utils": "^2.4.6",
     "@vue/tsconfig": "^0.8.1",
-    "babel-loader-exclude-node-modules-except": "^1.2.1",
     "css-loader": "^7.1.2",
-    "esbuild-loader": "^4.3.0",
     "globals": "^16.4.0",
     "jsdom": "^26.1.0",
-    "mini-css-extract-plugin": "^2.9.4",
     "openapi-typescript": "^7.9.1",
     "regenerator-runtime": "^0.14.1",
     "sass-loader": "^16.0.5",
@@ -111,9 +107,7 @@
     "typescript": "^5.9.2",
     "vitest": "^3.2.4",
     "vue-loader": "^17.4.2",
-    "wasm-check": "^2.1.2",
-    "webpack-bundle-analyzer": "^4.10.2",
-    "worker-loader": "^3.0.8"
+    "wasm-check": "^2.1.2"
   },
   "engines": {
     "node": "^22.0.0",