fix(#2945): stack overflow on api.git.reload or fugitive event with watchers disabled (#2949)

* Reapply "refactor(#2871, #2886): multi instance: node classes created (#2916)"

This reverts commit 50e919426a.

* fix(#2945): stack overflow on api.git.reload or fugitive event

lua/nvim-tree/renderer/decorator/opened.lua

@@ -6,21 +6,22 @@ local ICON_PLACEMENT = require("nvim-tree.enum").ICON_PLACEMENT
 local Decorator = require("nvim-tree.renderer.decorator")
 
 ---@class (exact) DecoratorOpened: Decorator
----@field enabled boolean
 ---@field icon HighlightedString|nil
 local DecoratorOpened = Decorator:new()
 
+---Static factory method
 ---@param opts table
 ---@param explorer Explorer
 ---@return DecoratorOpened
-function DecoratorOpened:new(opts, explorer)
-  local o = Decorator.new(self, {
+function DecoratorOpened:create(opts, explorer)
+  ---@type DecoratorOpened
+  local o = {
     explorer = explorer,
     enabled = true,
     hl_pos = HL_POSITION[opts.renderer.highlight_opened_files] or HL_POSITION.none,
     icon_placement = ICON_PLACEMENT.none,
-  })
-  ---@cast o DecoratorOpened
+  }
+  o = self:new(o) --[[@as DecoratorOpened]]
 
   return o
 end