Reader: use existing module instances on start (#11485)

reader.lua

@@ -271,20 +271,11 @@ else
         -- Always open FM modules on top of filemanager, so closing 'em doesn't result in an exit
         -- because of an empty widget stack, and so they can interact with the FM instance as expected.
         if start_with == "history" then
-            local FileManagerHistory = require("apps/filemanager/filemanagerhistory")
-            FileManagerHistory:new{
-                ui = FileManager.instance,
-            }:onShowHist()
+            FileManager.instance.history:onShowHist()
         elseif start_with == "favorites" then
-            local FileManagerCollection = require("apps/filemanager/filemanagercollection")
-            FileManagerCollection:new{
-                ui = FileManager.instance,
-            }:onShowColl("favorites")
+            FileManager.instance.collections:onShowColl()
         elseif start_with == "folder_shortcuts" then
-            local FileManagerShortcuts = require("apps/filemanager/filemanagershortcuts")
-            FileManagerShortcuts:new{
-                ui = FileManager.instance,
-            }:onShowFolderShortcutsDialog()
+            FileManager.instance.folder_shortcuts:onShowFolderShortcutsDialog()
         end
         exit_code = UIManager:run()
     end