fix(server): @fastify/express doesn't work with http2

[trim21]

Description

Related Issue

close #696

Screenshots

Types of changes

• Breaking change (changes that break backward compatibility of public API or CLI - semver MAJOR)
• New feature (non-breaking change which adds functionality - semver MINOR)
• Bug fix (non-breaking change which fixes an issue - semver PATCH)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e523a29) 73.15% compared to head (808a687) 73.15%.

❗ Current head 808a687 differs from pull request most recent head 6c310df. Consider uploading reports for the commit 6c310df to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #705   +/-   ##
=======================================
  Coverage   73.15%   73.15%           
=======================================
  Files          62       62           
  Lines       11384    11384           
  Branches      961      965    +4     
=======================================
  Hits         8328     8328           
  Misses       3042     3042           
  Partials       14       14           

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