Fix gems being added to skill groups when sorting dropdown (#1221)

Copy from PathOfBuildingCommunity/PathOfBuilding#8802

Co-authored-by: LocalIdentity <localidentity2@gmail.com>

Author: LocalIdentity

src/Classes/GemSelectControl.lua

@@ -48,6 +48,7 @@ end)
 
 function GemSelectClass:CalcOutputWithThisGem(calcFunc, gemData, useFullDPS)
 	local gemList = self.skillsTab.displayGroup.gemList
+	local displayGemList = self.skillsTab.displayGroup.displayGemList
 	local oldGem
 	if gemList[self.index] then
 		oldGem = copyTable(gemList[self.index], true)
@@ -82,7 +83,9 @@ function GemSelectClass:CalcOutputWithThisGem(calcFunc, gemData, useFullDPS)
 	else
 		gemList[self.index] = nil
 	end
-
+	
+	self.skillsTab.displayGroup.displayGemList = displayGemList
+	
 	return output, gemInstance
 end