Input type not inferred correctly for block input

[kubouch]

Describe the bug

The input type is not passed into a block within a pipeline.

How to reproduce

> ls | into df | group-by name type
  LazyGroupBy   apply aggregation to complete execution plan

> ls | into df | if true { group-by name type }
Error: nu::parser::extra_positional (link)

  × Extra positional argument.
   ╭─[entry #5:1:1]
 1 │ ls | into df | if true { group-by name type }
   ·                                        ──┬─
   ·                                          ╰── extra positional argument
   ╰────
  help: Usage: group-by (grouper)

Expected behavior

Both should work

Screenshots

No response

Configuration

key	value
version	0.64.1
branch	master
commit_hash	533e04a
build_os	linux-x86_64
build_target	x86_64-unknown-linux-gnu
rust_version	rustc 1.60.0 (7737e0b5c 2022-04-04)
rust_channel	stable-x86_64-unknown-linux-gnu
cargo_version	cargo 1.60.0 (d1fd9fe 2022-03-01)
pkg_version	0.64.1
build_time	2022-06-24 10:57:53 +03:00
build_rust_channel	release
features	database, dataframe, default, trash, which, zip
installed_plugins	gstat

Additional context

No response