add streaming to get and reject (#14622)

Closes #14487.

# Description

`get` and `reject` now stream properly:

Before:

![image](https://github.com/user-attachments/assets/57ecb705-1f98-49a4-a47e-27bba1c6c732)

Now:

![image](https://github.com/user-attachments/assets/dc5c7fba-e1ef-46d2-bd78-fd777b9e9dad)

# User-Facing Changes

# Tests + Formatting

# After Submitting

---------

Co-authored-by: Wind <WindSoilder@outlook.com>
Co-authored-by: 132ikl <132@ikl.sh>

crates/nu-command/tests/commands/split_by.rs

@@ -56,8 +56,11 @@ fn errors_if_non_record_input() {
             "
         ));
 
-        assert!(only_supports
-            .err
-            .contains("only Record input data is supported"));
+        assert!(
+            only_supports
+                .err
+                .contains("only Record input data is supported")
+                || only_supports.err.contains("expected: record")
+        );
     })
 }