dbt clean: Warning instead of DBTRunTimeError with outside path

[asarraf]

With the DBT 1.8, I am getting a DBTRunTimeError when doing dbt clean (or with the flag --clean-project-files-only)

:
Runtime Error
  dat will not clean the following directories outside the project: ['/Users/.../test_file.log']

This leads to stalling of the dbt clean command.

This works fine with --no-clean-project-files-only (Expected)

Thought 1: (Seems Better)
Have the dbt clean all the paths within the project and ONLY display the outside path that it cannot clean.

Adv of the new way:

1. the command doesn't fail
2. It still deletes the files within the project
3. We still retain --clean-project-files-only as the default flag

Thought 2: (Seems a quicker fix)
Make --no-clean-project-files-only as default for dbt clean

Adv:

1. dbt clean -clean-project-files-only only fails if we explicitly want to delete only project files when the clean-targets also contains the non-project files