fix(keybinds): remove :major-modes from localleader definitions

`define-localleader-key!` unconditionally set `:major-modes t`, which
makes general.el infer mode names from keymap names and use
`which-key-add-major-mode-key-based-replacements`. This only works for
major mode keymaps — minor mode keymaps (like `cider-mode-map`) get
their which-key descriptions silently dropped.

Without `:major-modes`, general.el uses
`which-key-add-keymap-based-replacements` instead, which works for all
keymaps. The `:keymaps` property (always provided by `map!`) already
scopes bindings to the correct keymap.

Fix #8539

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: kovan

lisp/doom-keybinds.el

@@ -199,12 +199,10 @@ localleader prefix."
       ;; emacs state)
       `(general-define-key
         :states '(normal visual motion emacs insert)
-        :major-modes t
         :prefix doom-localleader-key
         :non-normal-prefix doom-localleader-alt-key
         ,@args)
     `(general-define-key
-      :major-modes t
       :prefix doom-localleader-alt-key
       ,@args)))