prevent uielements depth going out of control

ok actually its possible for depth to not be the issue here, some things just return null for parents for no reason but this fix actually works exactly like its needed so im good

Themes/_fallback/Scripts/97 UIElements.lua

@@ -123,9 +123,13 @@ function Actor.GetButtonRoot(self, depth)
 
 	local buttonRoot = self
 	for i = 0, depth, 1 do
-		buttonRoot = buttonRoot:GetParent()
+		local r = buttonRoot:GetParent()
+		if r ~= nil then
+			buttonRoot = r
+		else
+			break
+		end
 	end
-
 	return buttonRoot
 end
 
@@ -401,7 +405,7 @@ function BUTTON.GetTopButton(self, x, y)
 		if not v then
 			print("something very scary happened and i think i prevented it")
 		else
-			if v:IsOver(x, y) then 
+			if v:IsOver(x, y) then
 				local z = v:GetTrueZ()
 				if z >= topZ then
 					topButton = v