replace poll-until-cancel OnUpdate frames with C_Timer / RunNextFrame

Seven ad-hoc OnUpdate handlers were only spinning long enough to reach
a known deadline or a next-frame defer, then unhooking themselves.
Convert them to their proper primitives:

- autovendor: 0.3s wait after junk sell → C_Timer.After(0.3, ...)
- innervatecall: cooldown-expiry ready ping → C_Timer.After(cd, ...)
- focus: re-arm UI_ERROR_MESSAGE next tick → RunNextFrame
- macrotweak: conflict scan after addons load → RunNextFrame
- ui-widgets (CreateQuestionDialog): font-measure resize → RunNextFrame
- libdebuff: post-PEW Nampower init → RunNextFrame
- bubbles: WorldFrame scan after chat event → RunNextFrame

Net -18 lines and no more throwaway frames sitting on the OnUpdate list.

modules/bubbles.lua

@@ -12,7 +12,9 @@ pfUI:RegisterModule("bubbles", function ()
   pfUI.bubbles:RegisterEvent("CHAT_MSG_MONSTER_PARTY")
 
   pfUI.bubbles:SetScript("OnEvent", function()
-    pfUI.bubbles:SetScript("OnUpdate", pfUI.bubbles.ScanBubbles)
+    -- Bubble frames are attached to WorldFrame after the chat event fires,
+    -- so wait one tick before scanning.
+    RunNextFrame(function() pfUI.bubbles:ScanBubbles() end)
   end)
 
   function pfUI.bubbles:IsBubble(f)
@@ -66,7 +68,5 @@ pfUI:RegisterModule("bubbles", function ()
           end)
         end
     end
-
-    pfUI.bubbles:SetScript("OnUpdate", nil)
   end
 end)