Add a flag to disable getBlobs (#7853)

N/A


  Add a flag to disable get blobs. I configured the flag to disable it regardless of version because its most likely something we use for testing anyway.

beacon_node/src/cli.rs

@@ -909,6 +909,14 @@ pub fn cli_app() -> Command {
                 .action(ArgAction::Set)
                 .display_order(0)
         )
+        .arg(
+            Arg::new("disable-get-blobs")
+                .long("disable-get-blobs")
+                .help("Disables the getBlobs optimisation to fetch blobs from the EL mempool")
+                .action(ArgAction::SetTrue)
+                .help_heading(FLAG_HEADER)
+                .display_order(0)
+        )
         .arg(
             Arg::new("builder-header-timeout")
                 .long("builder-header-timeout")