[finance] Fix up evil-ledger mode initialization (#15816)

* [finance] Fix incorrectly-defined hook

This was preventing evil-ledger from being automatically loaded.

* [finance] Don't show evil-ledger-mode lighter in mode line

layers/+tools/finance/packages.el

@@ -45,7 +45,10 @@
 (defun finance/init-evil-ledger ()
   (use-package evil-ledger
     :defer t
-    :init (add-hook 'ledger-mode 'evil-ledger-mode)))
+    :init (add-hook 'ledger-mode-hook 'evil-ledger-mode)
+    :config
+    ;; Unset evil-ledger-mode's lighter
+    (setf (cadr (assoc 'evil-ledger-mode minor-mode-alist)) "")))
 
 (defun finance/init-ledger-mode ()
   (use-package ledger-mode