fix: allow all default config to be replaced by user config

[06kellyjac]

Currently most config options can be replaced, this change adjusts the rest
to also allow for this.

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[codecov]

Codecov Report

Attention: Patch coverage is 71.42857% with 6 lines in your changes missing coverage. Please review.

Project coverage is 57.34%. Comparing base (890997b) to head (fea02a8).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/config/index.js	71.42%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #742      +/-   ##
==========================================
- Coverage   57.39%   57.34%   -0.06%     
==========================================
  Files          46       46              
  Lines        1582     1594      +12     
==========================================
+ Hits          908      914       +6     
- Misses        674      680       +6     

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[JamieSlome]

LGTM! 🍰