We noticed that the reporting function in Element is broken, at least when using the 'specialized-workers' preset.
This changes the `main_override_locations_regex` of the reverse proxy companion to ensure that requests to `/_matrix/client/v3/rooms/<roomid>/report/<message>` always land on the main process.
Currently, Synapse workers ignore the X-Forwarded headers, which leads to internal Docker IP addresses randomly appearing in the users' device list.
This adds the `x_forwarded: true` option to the worker config, fixing the issue.