fix(util): throttle now autonatically schedules when in fast event

lua/snacks/util.lua

@@ -242,19 +242,24 @@ end
 ---@return T
 function M.throttle(fn, opts)
   local timer, trailing, ms = assert(uv.new_timer()), false, opts and opts.ms or 20
+  local running = false
+  local function run()
+    running = true
+    if vim.in_fast_event() then
+      return vim.schedule(run)
+    end
+    fn()
+    running = false
+  end
   return function()
-    if timer:is_active() then
+    if running or timer:is_active() then
       trailing = true
       return
     end
     trailing = false
-    if vim.in_fast_event() then
-      vim.schedule(fn)
-    else
-      fn()
-    end
+    run()
     timer:start(ms, 0, function()
-      return trailing and vim.schedule(fn)
+      return trailing and run()
     end)
   end
 end