Fix setting tax rates on invoices and quotes

[pierredup]

No description provided.

[what-the-diff]

PR Summary

• Removed ContactTypeTransformer class
  Replaced with more efficient EntityUuidTransformer
• Updated Select2Type
  Now uses non-deprecated ChoiceType as parent
• Introduced form_help block
  Simplifies help text display in forms and replaced old functionality
• Resolved TaxEntity autowiring issues
  Fixed missing services definition leading to previous issues

[codecov]

Codecov Report

Patch coverage: 54.44% and project coverage change: -0.08 ⚠️

Comparison is base (5db4606) 50.60% compared to head (90196e2) 50.53%.

Additional details and impacted files

@@             Coverage Diff              @@
##              2.2.x     #820      +/-   ##
============================================
- Coverage     50.60%   50.53%   -0.08%     
- Complexity     2201     2207       +6     
============================================
  Files           439      438       -1     
  Lines          8303     8242      -61     
============================================
- Hits           4202     4165      -37     
+ Misses         4101     4077      -24     

Flag	Coverage Δ
unittests	50.53% <54.44%> (-0.08%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/ApiBundle/ApiTokenManager.php	100.00% <ø> (ø)
...le/Event/Listener/AuthenticationSuccessHandler.php	0.00% <ø> (ø)
.../Normalizer/AdditionalContactDetailsNormalizer.php	94.73% <ø> (ø)
...undle/Serializer/Normalizer/DiscountNormalizer.php	100.00% <ø> (ø)
src/ClientBundle/Action/Add.php	0.00% <ø> (ø)
src/ClientBundle/Action/Ajax/Address/Edit.php	0.00% <ø> (ø)
src/ClientBundle/Action/Ajax/Contact/Add.php	0.00% <ø> (ø)
src/ClientBundle/Action/Ajax/Contact/Edit.php	0.00% <ø> (ø)
src/ClientBundle/Action/Ajax/Delete.php	0.00% <ø> (ø)
src/ClientBundle/Action/Edit.php	0.00% <ø> (ø)
... and 177 more

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