Add safeProtocol as a parameter for defaultUrlTransform

[janpe]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and discussions and couldn’t find anything or linked relevant results below
• I made sure the docs are up to date
• I included tests (or that’s not needed)

Description of changes

Allow usage of defaultUrlTransform with custom safeProtocol regex string

Resolves #941

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (fda7fa5) to head (7af5938).

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #942   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines         1743      1815   +72     
  Branches       123       131    +8     
=========================================
+ Hits          1743      1815   +72     

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