revert: refactor(lib): remove doom-apply-ansi-color-to-compilation-buffer-h

ansi-color-compilation-filter wasn't introduced until Emacs 28, so this
removal was too hasty, but should be reconsidered when we drop 27.x
support.

Fix: #6515
Revert: 2f7171bf8a

core/autoload/ui.el

@@ -55,6 +55,13 @@ In tty Emacs, messages are suppressed completely."
 ;;
 ;;; Hooks
 
+;;;###autoload
+(defun doom-apply-ansi-color-to-compilation-buffer-h ()
+  "Applies ansi codes to the compilation buffers. Meant for
+`compilation-filter-hook'."
+  (with-silent-modifications
+    (ansi-color-apply-on-region compilation-filter-start (point))))
+
 ;;;###autoload
 (defun doom-disable-show-paren-mode-h ()
   "Turn off `show-paren-mode' buffer-locally."