Calls to function only highlighted when cursor is on the first clause

[eproxus]

Describe the bug
A clear and concise description of what the bug is.

When putting the cursor on a function definition, Erlang LS will highlight the calls in the module. However, when putting the cursor on a function clause that is not the first, the highlighting doesn't work.

Looking at the editor's JSON-RPC logs for the language server the calls seem identical so it seems that it is on the Erlang LS side things are not working.

To Reproduce

Take e.g. the following snippet:

conn(#{req := Req0} = Conn0) ->                                        % 1
    request_body(Conn0#{method => method(cowboy_req:method(Req0))}).   % 2
                                                                       % 3
method(<<"GET">>) -> get;                                              % 4
method(<<"POST">>) -> post;                                            % 5
method(<<"DELETE">>) -> delete;                                        % 6
method(_) -> throw(501).                                               % 7

An place the cursor on anywhere on the word method on line 4-7.

Expected behavior
The call to method/1 is highlighted on line 2 regardless of which line the cursor is placed.

Actual behavior
The call to method/1 is only highlighted when the cursor is placed on line 4, but not on line 5-7.

Context

• erlang_ls version (tag/sha): 0.52.0+build.1987.ref8700e96
• Editor used: Zed
• LSP client used: Zed (built-in)