Fix ssg get invalid jinja macros dir exception when using as third party library

[AlexXuan233]

Description:

• Fix ssg preload_macros function get invalid jinja macros dir exception when using as third party library.

Rationale:

• When ssg using as a third party library, if you still use JINJA_MACROS_DIRECTORY constant to get jinja macros dir, it will get directory end with site-packages/shared/macros.

• Fixes CPLYTM-916

Review Hints:

• Using ssg inside content is all fine.
• Using ssg as a third party python library, and when involve preload_macros function, will raise an exception. You can test with the following code

from ssg.profiles import get_profiles_from_products

profiles = get_profiles_from_products("content_root_dir", ["rhel10"])

print(profiles)

It will raise an exception without this PR, FileNotFoundError: [Errno 2] No such file or directory: '/home/fedora/.cache/pypoetry/virtualenvs/complyscribe-5ohETF1N-py3.12/lib/python3.12/site-packages/shared/macros'

[AlexXuan233]

Failed checks should not related to this PR, because i noticed other recent PR also have same failed checks.

[marcusburghardt]

LGTM. I have tested this internally and using ssg externally.

There is just a nit about the commits style guide: https://github.com/ComplianceAsCode/content/blob/master/docs/manual/developer/04_style_guide.md#commit-messages I don't think this blocks the PR but it would be great to have the commit aligned to the project style guides.

[marcusburghardt]

@jan-cerny , would you like to also take a look?

[AlexXuan233]

LGTM. I have tested this internally and using ssg externally.

There is just a nit about the commits style guide: https://github.com/ComplianceAsCode/content/blob/master/docs/manual/developer/04_style_guide.md#commit-messages I don't think this blocks the PR but it would be great to have the commit aligned to the project style guides.

Hi, Marcus. I updated the commit message, thanks for your review.

[jan-cerny]

Looks good to me. I don't see any problem.