Remove raw-loader dependency (#15112)

Webpack now includes this functionality, allowing us to drop this
now-deprecated dependency.

Ref: https://webpack.js.org/guides/asset-modules/
Ref: https://webpack.js.org/loaders/raw-loader/

package.json

@@ -35,7 +35,6 @@
     "monaco-editor-webpack-plugin": "3.0.1",
     "postcss": "8.2.8",
     "pretty-ms": "7.0.1",
-    "raw-loader": "4.0.2",
     "sortablejs": "1.13.0",
     "swagger-ui-dist": "3.45.1",
     "terser-webpack-plugin": "5.1.1",