Fixed "IsAbstract" for interfaces, traits, enums and final classes

[sebastianstucke87]

Fixed \Arkitect\Expression\ForClasses\IsAbstract because:

• interfaces can not be abstract
• traits can not be abstract
• enums can not be abstract
• final classes can not be abstract

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.19%. Comparing base (b78ecce) to head (00dd134).
Report is 3 commits behind head on main.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #425   +/-   ##
=========================================
  Coverage     94.19%   94.19%           
- Complexity      582      586    +4     
=========================================
  Files            69       69           
  Lines          1533     1534    +1     
=========================================
+ Hits           1444     1445    +1     
  Misses           89       89           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[AlessandroMinoccheri]

Hi @sebastianstucke87 can you please fix red checks?

[AlessandroMinoccheri]

LGTM 👍