utils.determine_base_dir is broken when nested configs exist

[awgymer]

Description of the bug

The utils.determine_base_dir method is actually broken but working erroneously under most circumstances.

The issue is discoverable when running nf-core modules commands in nested directories with .nf-core.yml.

Essentially the issue is:

• current/supplied directory is never actually checked for a config file
• this doesn't fail because when the code finds no configs in the directory tree it reverts back to the supplied directory as the base dir
• this directory in most cases actually does have a config and so the code never alerts the user that it only found it by chance.

Fix by reverting to original line which checked presence of config in current/supplied dir before iterating the tree

Command used and terminal output

No response

System information

No response

[awgymer]

Fixed in #2863