refactor mode judgement

[YaoZengzeng]

What type of PR is this?

/kind enhancement

What this PR does / why we need it:

Which issue(s) this PR fixes: Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[kmesh-bot]

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[codecov[bot]]

Codecov Report

:x: Patch coverage is 4.34783% with 22 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 52.76%. Comparing base (c5b6f8d) to head (254c71f). :warning: Report is 1317 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/cni/install.go	0.00%	13 Missing :warning:
pkg/controller/client.go	0.00%	5 Missing and 1 partial :warning:
pkg/utils/test/bpf_map.go	33.33%	1 Missing and 1 partial :warning:
pkg/logger/logger.go	0.00%	1 Missing :warning:

:x: Your patch check has failed because the patch coverage (4.34%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Files with missing lines	Coverage Δ
pkg/controller/controller.go	0.00% <ø> (ø)
pkg/logger/logger.go	35.63% <0.00%> (ø)
pkg/utils/test/bpf_map.go	41.46% <33.33%> (-2.13%)	:arrow_down:
pkg/controller/client.go	61.79% <0.00%> (-4.47%)	:arrow_down:
pkg/cni/install.go	37.70% <0.00%> (+1.19%)	:arrow_up:

... and 3 files with indirect coverage changes

---

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[YaoZengzeng]

/retest

[LiZhenCheng9527]

/lgtm