chore: remove the Halt termination policy type

[leon-inf]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 41.66667% with 7 lines in your changes missing coverage. Please review.

Project coverage is 61.16%. Comparing base (665e033) to head (188b9ca).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
apis/apps/v1alpha1/cluster_conversion.go	0.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8202      +/-   ##
==========================================
+ Coverage   60.82%   61.16%   +0.33%     
==========================================
  Files         352      350       -2     
  Lines       40786    40621     -165     
==========================================
+ Hits        24808    24845      +37     
+ Misses      13725    13528     -197     
+ Partials     2253     2248       -5     

Flag	Coverage Δ
unittests	61.16% <41.66%> (+0.33%)	⬆️

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[leon-inf]

/approve