fix: prevent timeout messages from displaying (#1282)

Author: tsmithsz

server/aws-lsp-codewhisperer/src/language-server/agenticChat/agenticChatController.ts

@@ -611,6 +611,7 @@ export class AgenticChatController implements ChatHandlers {
                     shouldDisplayMessage: false,
                 })
                 currentRequestInput = this.#updateRequestInputWithToolResults(currentRequestInput, [], content)
+                shouldDisplayMessage = false
                 continue
             }