fix(dataprotection): ignore target PVC deletion during restore

[leon-ape]

Problem

A target PVC deletion is not a restore cancellation signal. VolumePopulator must not introduce a separate cleanup, wait, condition, event, or requeue path based on DeletionTimestamp.

Changes

• remove the target-PVC-deleting cleanup path introduced in chore(dataprotection): move volume restore execution to restore controller #10630
• remove deletion-specific PVC condition, reason, warning event, and requeue behavior
• process a target PVC retained by the DP finalizer through the ordinary restore state machine, regardless of DeletionTimestamp
• preserve the existing failure-first and successful resource-release behavior

This PR intentionally does not add Cluster/Component lifecycle handling. Parent deletion cancellation is handled separately.

Ownership

VolumePopulator never deletes the target PVC. It only owns its DP finalizer and restore side effects.

Tests

• deleting and non-deleting target PVCs with the DP finalizer produce the same ordinary restore result
• full controllers/dataprotection package passes

[apecloud-bot]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.69%. Comparing base (8295e5e) to head (adaef79).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10819      +/-   ##
==========================================
+ Coverage   65.60%   65.69%   +0.08%     
==========================================
  Files         510      510              
  Lines       64408    64400       -8     
==========================================
+ Hits        42256    42306      +50     
+ Misses      18383    18355      -28     
+ Partials     3769     3739      -30     

Flag	Coverage Δ
unittests	65.69% <ø> (+0.08%)	⬆️

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[leon-ape]

/approve