feat(language): stop using visual-line-mode in prog-mode derived modes

It makes more sense for text-mode derived modes.

modules/completion/siren-copilot.el

@@ -10,7 +10,7 @@
   :straight (:host github :repo "zerolfx/copilot.el"
                    :files ("dist" "copilot.el"))
   :hook
-  (prog-mode . siren-copilot-setup)
+  (prog-mode . copilot-mode)
 
   :general
   ("C-<tab>" 'copilot-accept-completion)
@@ -20,14 +20,6 @@
             "C-TAB" 'copilot-accept-completion
             "<backtab>" 'copilot-accept-completion)
 
-  :preface
-  (defun siren-copilot-setup ()
-    ;; Disable visual-line-mode when copilot-mode is enabled. It prevents
-    ;; freezing issues, details:
-    ;; https://github.com/zerolfx/copilot.el/issues/15#issuecomment-1124244140
-    (visual-line-mode -1)
-    (copilot-mode))
-
   :config
   (with-eval-after-load 'company
     ;; Use company popup even when there's only one result

modules/major-modes/siren-prog-mode.el

@@ -24,7 +24,6 @@
         (siren-display-indentation 1))
 
     (hl-line-mode t)
-    (visual-line-mode t)
     (whitespace-mode t))
 
   :init