[now-routing-utils] Make sure to update segments in destination hash

[ijjk]

While migrating redirects on /docs I noticed we don't update segments in the hash of the destination. This updates to also handle these segments and adds a test for this behavior

[vercel]

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[styfle]

Thanks!

[codecov-io]

Codecov Report

Merging #3517 into master will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3517      +/-   ##
==========================================
+ Coverage   14.56%   14.59%   +0.03%     
==========================================
  Files         267      267              
  Lines       10769    10798      +29     
  Branches     1484     1485       +1     
==========================================
+ Hits         1568     1576       +8     
- Misses       9032     9053      +21     
  Partials      169      169

Impacted Files	Coverage Δ
src/util/dev/router.ts	69.33% <0%> (-3.91%)	⬇️
src/util/dev/yarn-installer.ts	79.68% <0%> (-3.65%)	⬇️
src/util/dev/builder-cache.ts	77.88% <0%> (-1.62%)	⬇️
src/util/get-update-command.ts	9.37% <0%> (-0.63%)	⬇️
src/util/dev/builder.ts	65.29% <0%> (-0.6%)	⬇️
src/util/dev/server.ts	59.55% <0%> (-0.06%)	⬇️

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