Add an internal trait to allow cross-version compatibility for ORM hydrators

[mbabker]

Ref: #2708

Similar to #2758 this adds a trait to help with cross-version compatibility, this time for the ORM hydrators and their changed signatures. Flat-out adding return types would be treated as a B/C break, so that can't be done cleanly until a 4.0 release, so this trait helps to cover those changes in an easily replaced way when the bridge is no longer needed.

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 78.91%. Comparing base (0632ab1) to head (32b60b3).
Report is 20 commits behind head on main.

Files	Patch %	Lines
src/Tool/ORM/Hydration/HydratorCompat.php	68.42%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2804      +/-   ##
==========================================
+ Coverage   78.75%   78.91%   +0.16%     
==========================================
  Files         163      164       +1     
  Lines        8593     8519      -74     
==========================================
- Hits         6767     6723      -44     
+ Misses       1826     1796      -30     

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[franmomu]

thanks @mbabker!