http action change

GitOrigin-RevId: 6cb6561fbd2600783f52744e936a82becf34ba03

Author: gautamg795

crates/common/src/knobs.rs

@@ -985,6 +985,11 @@ pub static MAX_BACKEND_RPC_REQUEST_SIZE: LazyLock<usize> =
 pub static MAX_BACKEND_RPC_RESPONSE_SIZE: LazyLock<usize> =
     LazyLock::new(|| env_config("MAX_BACKEND_RPC_RESPONSE_SIZE", (1 << 23) + 2000)); // 8 MiB + buffer
 
+/// The maximum size of byte chunks used when transmitting HTTP request/response
+/// bodies as part of HTTP Actions.
+pub static MAX_BACKEND_RPC_HTTP_CHUNK_SIZE: LazyLock<usize> =
+    LazyLock::new(|| env_config("MAX_BACKEND_RPC_RESPONSE_SIZE", 1 << 23)); // 8 MiB
+
 /// The maximum size for requests to the backend public API. Must be at least 8
 /// MiB for function arguments.
 pub static MAX_BACKEND_PUBLIC_API_REQUEST_SIZE: LazyLock<usize> =