fix(libs): restore ElvUI-namespaced Ace3 stack clobbered by sweep

The coa-ace3 sweep (commits 0c130e0..5ea6e44, before coa-elvui was added to
EXCLUDED_FORKS in coa-ace3 tools/sweep.py) overwrote ElvUI's customized,
-ElvUI-namespaced Ace3 libs with plain canonical ones. ElvUI registers libs
as AceLocale-3.0-ElvUI and the AceConfig-3.0-ElvUI family (plus -ElvUI
widgets that don't exist in canonical), so the clobber left them
unregistered: ElvUI failed to init (16 locale 'L' errors) and /ec would not
open. Restores ElvUI/Libraries/Ace3/AceLocale-3.0 and the
ElvUI_OptionsUI/Libraries/Ace3 stack to their pre-sweep state (5021fd1).
coa-elvui is now in EXCLUDED_FORKS, so this won't be re-clobbered.

ElvUI_OptionsUI/Libraries/Ace3/AceGUI-3.0/widgets/AceGUIWidget-CheckBox.lua

@@ -12,6 +12,10 @@ local select, pairs = select, pairs
 local PlaySound = PlaySound
 local CreateFrame, UIParent = CreateFrame, UIParent
 
+-- Global vars/functions that we don't upvalue since they might get hooked, or upgraded
+-- List them here for Mikk's FindGlobals script
+-- GLOBALS: SetDesaturation, GameFontHighlight
+
 --[[-----------------------------------------------------------------------------
 Support functions
 -------------------------------------------------------------------------------]]
@@ -56,9 +60,9 @@ local function CheckBox_OnMouseUp(frame)
 		self:ToggleChecked()
 
 		if self.checked then
-			PlaySound(856) -- SOUNDKIT.IG_MAINMENU_OPTION_CHECKBOX_ON
+			PlaySound("igMainMenuOptionCheckBoxOn")
 		else -- for both nil and false (tristate)
-			PlaySound(857) -- SOUNDKIT.IG_MAINMENU_OPTION_CHECKBOX_OFF
+			PlaySound("igMainMenuOptionCheckBoxOff")
 		end
 
 		self:Fire("OnValueChanged", self.checked)
@@ -195,14 +199,13 @@ local methods = {
 	["SetDescription"] = function(self, desc)
 		if desc then
 			if not self.desc then
-				local f = self.frame:CreateFontString(nil, "OVERLAY", "GameFontHighlightSmall")
-				f:ClearAllPoints()
-				f:SetPoint("TOPLEFT", self.checkbg, "TOPRIGHT", 5, -21)
-				f:SetWidth(self.frame.width - 30)
-				f:SetPoint("RIGHT", self.frame, "RIGHT", -30, 0)
-				f:SetJustifyH("LEFT")
-				f:SetJustifyV("TOP")
-				self.desc = f
+				local desc = self.frame:CreateFontString(nil, "OVERLAY", "GameFontHighlightSmall")
+				desc:ClearAllPoints()
+				desc:SetPoint("TOPLEFT", self.checkbg, "TOPRIGHT", 5, -21)
+				desc:SetWidth(self.frame.width - 30)
+				desc:SetJustifyH("LEFT")
+				desc:SetJustifyV("TOP")
+				self.desc = desc
 			end
 			self.desc:Show()
 			--self.text:SetFontObject(GameFontNormal)