fix(cw): retry 1 times cw streaming sdk client aws#6798

## Problem
This client is used in many Q features and does not currently allow
retries. This means a single SDK request failure will cause the
operation to fail.

It appears based on the code that this is not intentional, and was
accidentally left unfinished.

## Solution
- allow up to 1 retry.

Author: Hweinstock

packages/core/src/shared/clients/codewhispererChatClient.ts

@@ -17,9 +17,7 @@ export async function createCodeWhispererChatStreamingClient(): Promise<CodeWhis
         endpoint: cwsprConfig.endpoint,
         token: { token: bearerToken },
         customUserAgent: getUserAgent(),
-        // SETTING max attempts to 0 FOR BETA. RE-ENABLE FOR RE-INVENT
-        // Implement exponential back off starting with a base of 500ms (500 + attempt^10)
-        retryStrategy: new ConfiguredRetryStrategy(0, (attempt: number) => 500 + attempt ** 10),
+        retryStrategy: new ConfiguredRetryStrategy(1, (attempt: number) => 500 + attempt ** 10),
     })
     return streamingClient
 }