Add blob_size_limit_error to NamespaceInfo

Author: simvlad

temporal/api/namespace/v1/message.proto

@@ -40,6 +40,15 @@ message NamespaceInfo {
         bool reported_problems_search_attribute = 5;
     }
 
+    // Namespace configured limits
+    Limits limits = 8;
+    message Limits {
+        // Maximum size in bytes for payload fields in workflow history events
+        // (e.g., workflow/activity inputs and results, failure details, signal payloads).
+        // When exceeded, the server will reject the operation with an error.
+        int64 blob_size_limit_error = 1;
+    }
+
     // Whether scheduled workflows are supported on this namespace. This is only needed
     // temporarily while the feature is experimental, so we can give it a high tag.
     bool supports_schedules = 100;