fix: gernerate a catch-all route for rules with no matches and no hostnames in HTTPRoute and GRPCRoute

[randmonkey]

What this PR does / why we need it:

Generate a wildcard route that matches any HTTP/GRPC requests for rules in HTTPRoute/GRPCRoute with no matches and no hostnames in their parent objects.

Which issue this PR fixes:

fixes #4526

Special notes for your reviewer:

TODO: add integration tests?
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: 57.1% and project coverage change: -0.1% ⚠️

Comparison is base (13c8d70) 67.9% compared to head (3756e7d) 67.8%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #4528     +/-   ##
=======================================
- Coverage   67.9%   67.8%   -0.1%     
=======================================
  Files        161     161             
  Lines      18904   18913      +9     
=======================================
- Hits       12842   12836      -6     
- Misses      5307    5318     +11     
- Partials     755     759      +4     

Files Changed	Coverage Δ
internal/dataplane/parser/translate_grpcroute.go	77.7% <ø> (-0.8%)	⬇️
internal/dataplane/parser/translators/atc_utils.go	100.0% <ø> (ø)
...rnal/dataplane/parser/translators/httproute_atc.go	92.7% <43.7%> (-2.2%)	⬇️
internal/dataplane/parser/translate_httproute.go	77.5% <100.0%> (-1.1%)	⬇️
...rnal/dataplane/parser/translators/grpcroute_atc.go	93.6% <100.0%> (+<0.1%)	⬆️

... and 2 files with indirect coverage changes

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[rainest]

Updated op to fix #4526.

Originally pointed to #4512, which I'm pretty sure was a copy/paste error (it's the PR that raised 4526).