Add streamDeadlineMinutes to AiPlatform gRPC config (#27693)

* add grpc timeout var

* Update generated TypeScript types

* enhance description

* Update generated TypeScript types

* simplify description

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: tomasmontielp

openmetadata-spec/src/main/resources/json/schema/configuration/aiPlatformConfiguration.json

@@ -25,6 +25,13 @@
         "keepAliveTimeout": {
           "description": "Keep alive timeout for the gRPC server",
           "type": "integer"
+        },
+        "streamDeadlineMinutes": {
+          "description": "Deadline (minutes) enforced on a streaming response from the gRPC server.",
+          "type": "integer",
+          "default": 20,
+          "minimum": 1,
+          "maximum": 60
         }
       },
       "required": ["port"]

openmetadata-ui/src/main/resources/ui/src/generated/configuration/aiPlatformConfiguration.ts

@@ -88,5 +88,13 @@ export interface GrpcConfiguration {
      * Host for the gRPC server
      */
     port: number;
+    /**
+     * Deadline (minutes) Collate enforces on an AI Platform streaming response. Carried on the
+     * gRPC call, so the AI Platform reads it from context and wraps up gracefully. The chat
+     * lock sweeper uses streamDeadlineMinutes + 2 as its default stale-lock ceiling (override
+     * via COLLATE_CHAT_LOCK_MAX_DURATION_MINUTES). Capped at 60 minutes; for longer tasks
+     * prefer async job + polling over a single long-lived stream.
+     */
+    streamDeadlineMinutes?: number;
     [property: string]: any;
 }