[Backport 8.7] Fix estypesWithBody definition (#1784) (#1883)

Co-authored-by: Grégoire Chauvet <[email protected]>

Author: JoshMock

index.d.ts

@@ -22,6 +22,6 @@ import SniffingTransport from './lib/sniffingTransport'
 
 export * from '@elastic/transport'
 export * as estypes from './lib/api/types'
-export * as estypesWithBody from './lib/api/types'
+export * as estypesWithBody from './lib/api/typesWithBodyKey'
 export { Client, SniffingTransport }
 export type { ClientOptions, NodeOptions } from './lib/client'