fix(dataprotection): identify and route restore dependencies

[leon-ape]

Problem

VolumePopulator dependency events need stable Cluster and Component correlation without making those labels a deletion authorization mechanism.

Changes

• carry the Cluster UID through VCT restore intent into target and internal restore resources
• identify postReady Restore objects by their actual Component owner UID
• map execution Restore events to the exact target PVC
• map postReady events after the owner Component disappears
• isolate dependency fan-out by Cluster UID and include terminal PVCs for terminal/deleting Restore events
• keep all mappers enqueue-only; this PR adds no finalizer or deletion behavior

Compatibility

UID metadata is correlation only. Existing UID-less resources continue through the existing requeue path and are not migrated.

Tests

• restore intent UID injection and cleanup
• execution/postReady/Component/Cluster dependency mapping
• terminal/deleting Restore fan-out
• sharding and mismatched identity filtering
• full controllers/dataprotection suite

Refs #10755

Split from #10777.

[apecloud-bot]

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[codecov]

Codecov Report

❌ Patch coverage is 82.45614% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 65.86%. Comparing base (63373ca) to head (944d952).

Files with missing lines	Patch %	Lines
...llers/dataprotection/volumepopulator_controller.go	81.48%	6 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10844      +/-   ##
==========================================
+ Coverage   65.76%   65.86%   +0.09%     
==========================================
  Files         510      510              
  Lines       64958    64996      +38     
==========================================
+ Hits        42721    42809      +88     
+ Misses      18449    18414      -35     
+ Partials     3788     3773      -15     

Flag	Coverage Δ
unittests	65.86% <82.45%> (+0.09%)	⬆️

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[leon-ape]

/approve