fix bug pending when pruning replica for localvolumemigrate

[buffalo1024]

What this PR does / why we need it:

if LocalVolume is convertible, ConfigMap will not be created for localvolumemigrate, so we should not check ConfigMap when pruning replica

Special notes for your reviewer:

Does this PR introduce a user-facing change?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (21e63bf) 36.65% compared to head (d5e4772) 36.65%.
Report is 11 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1290   +/-   ##
=======================================
  Coverage   36.65%   36.65%           
=======================================
  Files          28       28           
  Lines        2218     2218           
=======================================
  Hits          813      813           
  Misses       1302     1302           
  Partials      103      103           

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[SSmallMonster]

LGTM