Revert "fix: action mt so we can again concat actions from two different tables (#1143)" (#1486)

This reverts commit 6daf35c88c.

lua/telescope/pickers.lua

@@ -8,6 +8,7 @@ local channel = require("plenary.async.control").channel
 local popup = require "plenary.popup"
 
 local actions = require "telescope.actions"
+local action_set = require "telescope.actions.set"
 local config = require "telescope.config"
 local debounce = require "telescope.debounce"
 local deprecated = require "telescope.deprecated"
@@ -47,6 +48,12 @@ function Picker:new(opts)
     error "layout_strategy and get_window_options are not compatible keys"
   end
 
+  -- Reset actions for any replaced / enhanced actions.
+  -- TODO: Think about how we could remember to NOT have to do this...
+  --        I almost forgot once already, cause I'm not smart enough to always do it.
+  actions._clear()
+  action_set._clear()
+
   deprecated.options(opts)
 
   local layout_strategy = get_default(opts.layout_strategy, config.values.layout_strategy)
@@ -1288,7 +1295,6 @@ function pickers.on_close_prompt(prompt_bufnr)
   end
 
   picker.close_windows(status)
-  mappings.clear(prompt_bufnr)
 end
 
 function pickers.on_resize_window(prompt_bufnr)