fix(tsconfig): preserve types for key-optional properties

[Eazash]

Resolves #252

This PR adds an explicit check for key-optional properties in the StripEnums utility. This ensures that key-optional properies are not cast as any and preserve their signature

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.73%. Comparing base (afdf7cb) to head (bcc17bd).
⚠️ Report is 94 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #253      +/-   ##
==========================================
+ Coverage   89.40%   93.73%   +4.33%     
==========================================
  Files           5       10       +5     
  Lines         434      447      +13     
  Branches       37       93      +56     
==========================================
+ Hits          388      419      +31     
+ Misses         46       28      -18     

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[KazariEX]

Why not simply:

Suggested change

	export type StripEnums<T extends Record<string, any>> = {
	export type StripEnums<T extends Record<string, any>> = {
	[K in keyof T]: NonNullable<T[K]> extends number ? any : T[K];
	};