UML-3750 added exception for null DOB

[allenannom]

Purpose

Added an exception to be thrown when the DOB is null. Then implemented a try/catch with a warning log

Fixes UML-3750

Approach

appropriately outputs the known error and logs _

Checklist

• I have performed a self-review of my own code
• I have added relevant logging with appropriate levels to my code
• New event_codes have been documented on the wiki page
• I have updated documentation (Confluence/GitHub wiki/tech debt doc) where relevant
• I have added tests to prove my work
• I have added welsh translation tags and updated translation files
• I have run an accessibility tool on any pages I have made changes to and fixed any issues found
• I have notified the Interaction Designer of any content changes so that appropriate screenshots/flow diagram changes can be made
• The product team have tested these changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.95%. Comparing base (f00760a) to head (2c10eb0).
Report is 204 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2984      +/-   ##
============================================
+ Coverage     91.25%   91.95%   +0.69%     
- Complexity     1504     1781     +277     
============================================
  Files           309      390      +81     
  Lines          6393     8275    +1882     
============================================
+ Hits           5834     7609    +1775     
- Misses          542      649     +107     
  Partials         17       17              

Flag	Coverage Δ
use-an-lpa-admin	78.85% <ø> (-0.41%)	⬇️
use-an-lpa-api	97.31% <100.00%> (-0.06%)	⬇️
use-an-lpa-front	90.69% <ø> (+1.15%)	⬆️

Files with missing lines	Coverage Δ
.../src/Exception/ActorDateOfBirthNotSetException.php	100.00% <100.00%> (ø)
...api/app/src/App/src/Service/Lpa/FindActorInLpa.php	100.00% <100.00%> (ø)
...e-api/app/src/App/src/Service/Lpa/SiriusPerson.php	96.07% <100.00%> (ø)

... and 224 files with indirect coverage changes

[cooperaj]

Seems to be missing the test case in the patch I sent that covers an LPA continuing to match on good actors even if a null dob actor is included.