fix: Runtime config in dev mode

MFE runtime configuration was not working properly prior to this.  It
would always end up querying the `example.com` site configuration.  With
this change, we force the request origin to always be the LMS host and
port, as opposed to something like `apps.local.edly.io:2001`, which
would trip up the Django site detection.

Author: arbrandes

changelog.d/20240206_100528_arbrandes_fix_dev_runtime_config.md

@@ -0,0 +1 @@
+- [Bugfix] Fix MFE runtime config via site configuration in dev mode (by @arbrandes).

tutormfe/templates/mfe/apps/mfe/webpack.dev-tutor.config.js

@@ -15,7 +15,10 @@ module.exports = merge(baseDevConfig, {
     // https://github.com/webpack/webpack-dev-server/blob/master/migration-v4.md
     allowedHosts: 'all',
     proxy: {
-      '/api/mfe_config/v1' : 'http://{{ LMS_HOST }}:8000',
+      '/api/mfe_config/v1': {
+        target: 'http://{{ LMS_HOST }}:8000',
+        changeOrigin: true,
+      }
     }
   },
 })