fix(lazy): 按键触发加载失败时不执行后续 action

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lua/lazy.lua

@@ -109,7 +109,9 @@ M.on_keys = function(name, keys, mode, fn, action, opts)
 	mode = mode or "n"
 	opts = opts or {}
 	vim.keymap.set(mode, keys, function()
-		M.load(name, fn)
+		if not M.load(name, fn) then
+			return
+		end
 		if action then
 			action()
 		end