chore: always point livereload to localhost (#5029)

# What this PR does

Always point livereload to localhost. I missed this change when
submitting this PR: #5021

## Checklist

- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

grafana-plugin/webpack.config.ts

@@ -59,7 +59,16 @@ const config = async (env): Promise<Configuration> => {
  },
  plugins: [
  ...(baseConfig.plugins?.filter((plugin) => !(plugin instanceof LiveReloadPlugin)) || []),
- ...(env.development ? [new LiveReloadPlugin({ appendScriptTag: true, useSourceHash: true })] : []),
+ ...(env.development
+ ? [
+ new LiveReloadPlugin({
+ appendScriptTag: true,
+ useSourceHash: true,
+ protocol: 'http',
+ hostname: 'localhost',
+ }),
+ ]
+ : []),
  new EnvironmentPlugin({
  NODE_ENV: 'development',
  PLUGIN_ID: 'grafana-oncall-app',