`needs` is missing from `main` namespace

Describe the bug

As a side-effect of 3c87437a4fee8ba40fbb8ffe878178b0a09eda9c via #1414, needs is no longer registered in the main namespace, which might break some of the expected behavior. Tasks that depends on another task from the Rexfile are failing with error messages similar to:

Can't locate object method "needs" via package "main" at /loader/0x55c93d31c3b8/__Rexfile__.pm line 16, <> line 1

Expected behavior

needs should be present in the main namespace to stay backwards compatible with the established behavior.

How to reproduce it

1. create a task two that depends on another task in the Rexfile via needs main 'one';
2. execute two with rex two

Code example

use Rex -feature => [ '1.4' ];

task 'one', sub {
  say 'hello from one';
};

task 'two', sub {
  needs main 'one';
  say 'hello from two';
};

Additional context

Discovered while investigating #1543, so the code example is also taken from there, but fixed to show only this bug.

Rex version

1.13.4

Perl version

5.36.0

Operating system running rex

Gentoo

Operating system managed by rex

local

How rex was installed?

dzil install

Start with the Rexfile example and the rex two command, then inspect commit 3c87437a4fee8ba40fbb8ffe878178b0a09eda9c and PR #1414. Done means needs main 'one'; works again and executing rex two completes without the missing-method error.