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/AceGUIContainer-BlizOptionsGroup.lua

@@ -2,7 +2,7 @@
 BlizOptionsGroup Container
 Simple container widget for the integration of AceGUI into the Blizzard Interface Options
 -------------------------------------------------------------------------------]]
-local Type, Version = "BlizOptionsGroup", 26
+local Type, Version = "BlizOptionsGroup", 21
 local AceGUI = LibStub and LibStub("AceGUI-3.0", true)
 if not AceGUI or (AceGUI:GetWidgetVersion(Type) or 0) >= Version then return end
 
@@ -99,11 +99,7 @@ local methods = {
 Constructor
 -------------------------------------------------------------------------------]]
 local function Constructor()
-	-- CoA-compat: InterfaceOptionsFramePanelContainer is a global from the stock 3.3.5
-	-- Interface Options frame; on the CoA reworked FrameXML it can be nil at the time
-	-- AceGUI widgets are constructed. Fall back to UIParent so CreateFrame doesn't blow up.
-	local _parent = InterfaceOptionsFramePanelContainer or UIParent
-	local frame = CreateFrame("Frame", nil, _parent)
+	local frame = CreateFrame("Frame")
 	frame:Hide()
 
 	-- support functions for the Blizzard Interface Options
@@ -112,11 +108,6 @@ local function Constructor()
 	frame.default = default
 	frame.refresh = refresh
 
-	-- 10.0 support function aliases (cancel has been removed)
-	frame.OnCommit = okay
-	frame.OnDefault = default
-	frame.OnRefresh = refresh
-
 	frame:SetScript("OnHide", OnHide)
 	frame:SetScript("OnShow", OnShow)