Macros used only by directives are marked unused.

[harrisi]

Describe the bug
If a macro is only used by other directives, it's treated as unused.

To Reproduce

-module(foo).

-define(exports, [bar/0]).
-export(?exports).

bar() -> 0.
%% if bar is instead defined like this:
%% bar() -> ?exports.
%% it doesn't surface a warning.

Expected behavior
No warning of unused macro.

Actual behavior
Warning of unused macro.

Context

• erlang_ls version (tag/sha): b8724fb
• Editor used:

VIM - Vi IMproved 9.0 (2022 Jun 28, compiled Feb 17 2023 20:31:45)
macOS version - arm64
Included patches: 1-1307

• LSP client used: coc.nvim version: 0.0.82-d1568d56 2023-09-29 19:43:34 +0800