chore: improve user friendly on Upstream

[juzhiyuan]

Please answer these questions before submitting a pull request

Why submit this pull request?

• Improve user friendly

New feature or improvement

Improve i18n for Upstream's pass_host field & selector.

[codecov-io]

Codecov Report

Merging #1603 (f2aae04) into master (01c9528) will decrease coverage by 5.28%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master    #1603      +/-   ##
==========================================
- Coverage   71.46%   66.17%   -5.29%     
==========================================
  Files         132      132              
  Lines        5375     5375              
  Branches      592      592              
==========================================
- Hits         3841     3557     -284     
- Misses       1290     1506     +216     
- Partials      244      312      +68     

Flag	Coverage Δ
backend-e2e-test	61.24% <ø> (ø)
backend-e2e-test-ginkgo	46.83% <ø> (+0.06%)	⬆️
backend-unit-test	?
frontend-e2e-test	72.49% <50.00%> (-0.09%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
web/src/components/Upstream/UpstreamForm.tsx	62.01% <ø> (ø)
web/src/pages/Upstream/components/Step1.tsx	100.00% <ø> (ø)
web/src/pages/Upstream/Create.tsx	81.25% <50.00%> (ø)
api/internal/utils/runtime/runtime.go	0.00% <0.00%> (-64.29%)	⬇️
api/internal/core/store/validate_mock.go	0.00% <0.00%> (-50.00%)	⬇️
api/internal/handler/service/service.go	57.44% <0.00%> (-34.05%)	⬇️
api/internal/filter/authentication.go	47.22% <0.00%> (-30.56%)	⬇️
api/internal/core/store/store.go	60.24% <0.00%> (-27.72%)	⬇️
api/internal/filter/ip_filter.go	48.71% <0.00%> (-23.08%)	⬇️
api/internal/handler/global_rule/global_rule.go	64.51% <0.00%> (-19.36%)	⬇️
... and 16 more

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[LiteSun]

why the message is an empty string? 🤔

[juzhiyuan]

because when users leave this field empty, the input box will have a red border to alert them 🤔

[liuxiran]

it seems that when the required field is empty, the required message will appear behind the input box, so if we leave the message an empty string, there will be an empty line appear. anyway, since the host rewrite become a disable option, this input box will never show in the page.

[juzhiyuan]

ya

[imjoey]

/lgtm

The new messages are much better. Thanks.

[juzhiyuan]

ping ~

[liuxiran]

LGTM

[LiteSun]

LGTM

[moonming]

The result of the discussion in the mailing list is that only one switch option

[juzhiyuan]

`[DISCUSS] about the upstream request’s Host header

It seems that the discussion is still in progress 🤔 why not review & take action on this improvement PR first?