Add missing default http headers (#2557)

[987Nabil]

fixes #2557
/claim #2557

[codecov-commenter]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (f4b2b3f) 64.23% compared to head (410e6cd) 64.36%.

Files	Patch %	Lines
zio-http/src/main/scala/zio/http/Header.scala	84.00%	8 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2595      +/-   ##
==========================================
+ Coverage   64.23%   64.36%   +0.13%     
==========================================
  Files         140      140              
  Lines        8358     8411      +53     
  Branches     1604     1580      -24     
==========================================
+ Hits         5369     5414      +45     
- Misses       2989     2997       +8     

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