codewhisperer: add userAgent in the created CW clients (#3609)

Author: andrewyuq

src/codewhisperer/client/codewhisperer.ts

@@ -97,8 +97,7 @@ export class DefaultCodeWhispererClient {
                     },
                 ],
             } as ServiceOptions,
-            undefined,
-            false
+            undefined
         )) as CodeWhispererClient
     }
 
@@ -127,8 +126,7 @@ export class DefaultCodeWhispererClient {
                     },
                 ],
             } as ServiceOptions,
-            undefined,
-            false
+            undefined
         )) as CodeWhispererUserClient
     }