fix: pcall-guard C_ClassInfo.GetSpecInfo in Types.lua spec iteration

Same CoA client issue as coa-details: GetAllSpecs(class) returns items
that GetSpecInfo rejects with 'Expected string' at arg #2. Wrap the
addSpec(class, GetSpecInfo(class, spec)) call in pcall so bad iterations
skip silently rather than spamming Error.txt.

WeakAuras/Types.lua

@@ -3839,7 +3839,10 @@ do
       local specs = C_ClassInfo.GetAllSpecs(class)
       if specs then
         for _, spec in ipairs(specs) do
-          addSpec(class, C_ClassInfo.GetSpecInfo(class, spec))
+          local ok, info = pcall(C_ClassInfo.GetSpecInfo, class, spec)
+          if ok and info then
+            addSpec(class, info)
+          end
         end
       end
     end