fix: pcall-guard C_ClassInfo.GetSpecInfo to silence CoA spec API spam

On the current CoA Beta client, C_ClassInfo.GetAllSpecs(class) returns
items that GetSpecInfo cannot accept as arg #2, throwing
'Script::ValidateInput Invalid argument type at index 2. Expected string.'
~150 times per session across DF, LibOpenRaid, gears, profiles, etc.

Wrap every unguarded GetSpecInfo(class, spec) site in pcall + nil-guard
so the iteration skips bad entries silently. Matches the pattern already
used by CoaExporter and prevents Error.txt flooding.

functions/profiles.lua

@@ -962,11 +962,13 @@ for _, class in ipairs(CLASS_SORT_ORDER) do
 	local specs = C_ClassInfo.GetAllSpecs(class)
 	if specs then
 		for _, spec in ipairs(specs) do
-			local spec_info = C_ClassInfo.GetSpecInfo(class, spec)
+			local ok, spec_info = pcall(C_ClassInfo.GetSpecInfo, class, spec)
+			if ok and spec_info then
 			if spec_info then
 				default_profile.class_specs_coords [spec_info.ID] = {AtlasUtil:GetCoords("specicon-"..class.."-"..spec_info.Spec)}
 			end
 		end
+			end
 	end
 end