Fix server settings (#38477)

In the settings refactor I'd assumed server settings were like project
settings. This is not the case, they are in fact the normal user
settings;
but just read from the server.

Release Notes:

- N/A

Cargo.lock

@@ -5295,6 +5295,7 @@ dependencies = [
  "url",
  "util",
  "uuid",
+ "vim_mode_setting",
  "workspace",
  "workspace-hack",
  "zed_actions",