Fixes for Npc Search on Npc Colors Tab

- When the player searched for npcs, the textentry was triggering twice per character typed.
- If the scrollbar's offset wasn't at value zero while typing the search text, it would show no results, as the scroll offset would be bigger than the amount of results.

Plater_OptionsPanel.lua

@@ -3415,13 +3415,22 @@ Plater.CreateAuraTesting()
 			end
 
 			--create search box
+				local latestSearchUpdate = 0
 				function colorsFrame.OnSearchBoxTextChanged()
 					local text = colorsFrame.AuraSearchTextEntry:GetText()
 					if (text and string.len (text) > 0) then
 						IsSearchingFor = text:lower()
 					else
 						IsSearchingFor = nil
 					end
+
+					if (latestSearchUpdate + 0.01 > GetTime()) then
+						return
+					end
+
+					latestSearchUpdate = GetTime()
+					spells_scroll.offset = 0
+					spells_scroll:OnVerticalScroll(spells_scroll.offset)
 					spells_scroll:Refresh()
 				end