perf: skip TestGameCache wait on clustering-only redraws

- SmoothReset now accepts { skipCacheTest = true } to short-circuit the game cache wait and draw-queue drain
- ClusterRedraw passes the flag so icon-cluster and dense-pin-clustering sliders redraw immediately
- QuestieOptionsAdvanced wires the spawn-pin-dedup-radius slider directly to ClusterRedraw instead of the delayed SmoothReset path

Modules/Options/AdvancedTab/QuestieOptionsAdvanced.lua

@@ -374,7 +374,7 @@ function QuestieOptions.tabs.advanced:Initialize()
                     if QuestieDB and QuestieDB.ClearModeCaches then
                         QuestieDB:ClearModeCaches()
                     end
-                    QuestieOptionsUtils:Delay(0.05, QuestieQuest.SmoothReset, l10n('Setting spawn pin dedup radius to %s : Redrawing!', value))
+                    QuestieOptions:ClusterRedraw()
                 end,
             },
             learnerCommsIntensity = {

Modules/Options/QuestieOptions.lua

@@ -118,8 +118,9 @@ end
 
 function QuestieOptions:ClusterRedraw()
     Questie:Debug(Questie.DEBUG_INFO, "Clustering changed, redrawing!")
-    --Redraw clusters here
-    QuestieQuest:SmoothReset();
+    -- Cluster-only changes don't depend on quest log state — skip the
+    -- TestGameCache wait and draw-queue drain that SmoothReset does.
+    QuestieQuest:SmoothReset({ skipCacheTest = true })
 end
 
 ---@return table

Modules/Quest/QuestieQuest.lua

@@ -330,7 +330,10 @@ local function _UpdateSpecials(questId)
     end
 end
 
-function QuestieQuest:SmoothReset()
+---@param opts? table Options table
+---@field opts.skipCacheTest boolean If true, skip the TestGameCache wait and draw-queue drain. Use for clustering-only changes that don't depend on quest log state.
+function QuestieQuest:SmoothReset(opts)
+    opts = opts or {}
     Questie:Debug(Questie.DEBUG_DEVELOP, "[QuestieQuest:SmoothReset]")
     if QuestieQuest._isResetting then
         QuestieQuest._resetAgain = true
@@ -344,6 +347,8 @@ function QuestieQuest:SmoothReset()
     local stepTable = {
         function()
             -- Wait until game cache has quest log okay.
+            -- Skipped when opts.skipCacheTest is set (clustering-only redraws).
+            if opts.skipCacheTest then return true end
             return QuestLogCache.TestGameCache()
         end,
         function()