feat(expression router) move setting protocols back to kongstate override for expression based routes

[randmonkey]

What this PR does / why we need it:

As suggested by gateway team, it is better to configure the protocols of Kong routes in protocols field than filling them directly into the expression. This PR moves the filling protocol back to the kongstate override phase of generated Kong routes, as with traditional router.

Which issue this PR fixes:

fixes #4313

Special notes for your reviewer:

PR Readiness Checklist:

Complete these before marking the PR as ready to review:

• the CHANGELOG.md release notes have been updated to reflect any significant (and particularly user-facing) changes introduced by this PR

[codecov]

Codecov Report

Patch coverage: 100.0% and project coverage change: +0.2% 🎉

Comparison is base (1e260dd) 67.5% compared to head (4a1154a) 67.7%.
Report is 1 commits behind head on main.

❗ Current head 4a1154a differs from pull request most recent head 08899b2. Consider uploading reports for the commit 08899b2 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #4422     +/-   ##
=======================================
+ Coverage   67.5%   67.7%   +0.2%     
=======================================
  Files        159     159             
  Lines      18803   18772     -31     
=======================================
+ Hits       12699   12724     +25     
+ Misses      5340    5284     -56     
  Partials     764     764             

Files Changed	Coverage Δ
...rnal/dataplane/parser/translators/grpcroute_atc.go	92.9% <ø> (-0.2%)	⬇️
...ternal/dataplane/parser/translators/ingress_atc.go	94.7% <ø> (+4.6%)	⬆️
internal/dataplane/kongstate/route.go	90.9% <100.0%> (ø)
...rnal/dataplane/parser/translators/httproute_atc.go	95.2% <100.0%> (-0.9%)	⬇️

... and 4 files with indirect coverage changes

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[czeslavo]

Allowed myself to rebase onto main and regenerate golden files (needed after #4426).

[pmalek]

🚢