koordlet: fix recursively disabling bvt

[saintube]

Ⅰ. Describe what this PR does

koordlet: fix the group identity disabling for the special cases when some pod cgroups are not under the kube qos

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Attention: 25 lines in your changes are missing coverage. Please review.

Comparison is base (10c2d6b) 67.04% compared to head (495411d) 67.05%.

Files	Patch %	Lines
.../koordlet/runtimehooks/hooks/groupidentity/rule.go	30.30%	18 Missing and 5 partials ⚠️
pkg/koordlet/util/node.go	77.77%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1848   +/-   ##
=======================================
  Coverage   67.04%   67.05%           
=======================================
  Files         407      407           
  Lines       45716    45728   +12     
=======================================
+ Hits        30651    30661   +10     
- Misses      12828    12831    +3     
+ Partials     2237     2236    -1     

Flag	Coverage Δ
unittests	67.05% <40.47%> (+<0.01%)	⬆️

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[zwzhang0107]

/lgtm
/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: zwzhang0107

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