REST API: Differentiate between checkbox and toggles

[jakejackson1]

Description

WIP

Testing instructions

Screenshots

Checklist:

• I've tested the code.
• My code is easy to read, follow, and understand
• My code follows the accessibility standards.
• My code has proper inline documentation / docblocks.

Additional Comments

[codecov]

Codecov Report

Attention: Patch coverage is 45.45455% with 6 lines in your changes missing coverage. Please review.

Project coverage is 77.79%. Comparing base (cc21c55) to head (f8329d7).
Report is 1 commits behind head on development.

Files with missing lines	Patch %	Lines
src/Rest/Rest_Form_Settings.php	33.33%	6 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           development    #1575      +/-   ##
===============================================
- Coverage        77.82%   77.79%   -0.04%     
===============================================
  Files              255      255              
  Lines            13899    13906       +7     
  Branches           370      370              
===============================================
+ Hits             10817    10818       +1     
- Misses            3074     3080       +6     
  Partials             8        8              

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