Macros are appended multiple times into Model __passthrough__

[federicoparroni]

Describe the bug
Macros are appended more than once in the Model __passthrough__.

To Reproduce
Steps to reproduce the behavior:

1. Declare a model subclass Example which extends a scope with macros, for example SoftDeleteScope
2. Import the class Example in some files
3. print(len(Example.__passthrough__)) will print more items than expected

Expected behavior
__passthrough__ should not increase in size indefinitely.

Desktop (please complete the following information):

• OS: Linux
• Version: Ubuntu 22.04

What database are you using?

• Type: [MySQL]
• Version [14.14 Distrib 5.7.30, for Linux (x86_64) using EditLine wrapper]
• Masonite ORM [2.18.5]