Introduce withRegistry helper in EntityBuilder

[AndreasLrx]

Description

Expose EntityBuilder._registry with const and non const getRegistry methods.
And introduce a new withRegistry helper to forward the internal registry as the first parameter to the component constructor.

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

Added/updated tests?

• New tests written
• Existing tests updated
• Tests are not required because this is a documentation update
• I need help with writing tests

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.75%. Comparing base (249352e) to head (30bb165).

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

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #159   +/-   ##
=======================================
  Coverage   82.75%   82.75%           
=======================================
  Files          63       63           
  Lines        1096     1096           
  Branches      349      349           
=======================================
  Hits          907      907           
  Misses        133      133           
  Partials       56       56           

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