feat(gateway): use default ports when missing

[ifplusor]

What problem does this PR solve?

Issue Number: None

Problem Summary

When ports is missing from the configure file, gateway will start without listening.

What is changed and how does it work?

Use default ports when missing.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

[codecov]

Codecov Report

Merging #551 (d58169a) into main (ee76217) will decrease coverage by 1.23%.
The diff coverage is 46.82%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #551      +/-   ##
==========================================
- Coverage   57.07%   55.85%   -1.23%     
==========================================
  Files         190      191       +1     
  Lines       15191    15532     +341     
==========================================
+ Hits         8670     8675       +5     
- Misses       5884     6211     +327     
- Partials      637      646       +9     

Impacted Files	Coverage Δ
internal/controller/eventbus/block/block.go	35.93% <0.00%> (-16.70%)	⬇️
internal/controller/eventbus/block/selector.go	91.66% <ø> (-8.34%)	⬇️
internal/controller/trigger/storage/storage.go	0.00% <ø> (ø)
internal/controller/trigger/worker/policy.go	100.00% <ø> (ø)
internal/gateway/proxy/deadletter.go	0.00% <0.00%> (ø)
internal/primitive/cel/cel.go	68.57% <0.00%> (ø)
...rnal/primitive/interceptor/errinterceptor/error.go	0.00% <0.00%> (ø)
.../primitive/interceptor/memberinterceptor/member.go	0.00% <0.00%> (ø)
internal/primitive/queue/queue.go	87.87% <ø> (ø)
internal/primitive/transform/action/action.go	11.94% <ø> (ø)
... and 70 more

... and 39 files with indirect coverage changes

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