Fix netpol startup when flannel is disabled

[brandond]

Proposed Changes

Fix netpol startup when flannel is disabled.

Don't break out of the poll loop if we can't get the node, RBAC might not be ready yet.

Types of Changes

bugfix

Verification

see linked issue

Testing

tbd
/cc @manuelbuil

Linked Issues

• K3s does not start with "flannel-backend=none" #9570

User-Facing Change

Further Comments

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 42.91%. Comparing base (fae0d99) to head (7da22c6).

Files	Patch %	Lines
pkg/agent/netpol/netpol.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9571      +/-   ##
==========================================
- Coverage   49.19%   42.91%   -6.29%     
==========================================
  Files         151      154       +3     
  Lines       13471    13523      +52     
==========================================
- Hits         6627     5803     -824     
- Misses       5506     6552    +1046     
+ Partials     1338     1168     -170     

Flag	Coverage Δ
e2etests	?
inttests	39.47% <0.00%> (-0.03%)	⬇️
unittests	15.96% <0.00%> (?)

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