report event when ip alloc failed

[l1b0k]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 30.51%. Comparing base (7ae80f3) to head (6f6e72b).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/controller/multi-ip/node/pool.go	0.00%	2 Missing ⚠️
pkg/eni/crdv2.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #696      +/-   ##
==========================================
+ Coverage   30.44%   30.51%   +0.07%     
==========================================
  Files          79       79              
  Lines        8682     8684       +2     
==========================================
+ Hits         2643     2650       +7     
+ Misses       5691     5687       -4     
+ Partials      348      347       -1     

Flag	Coverage Δ
unittests	30.51% <0.00%> (+0.07%)	⬆️

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