<feature>[storage]: ZSV-12664 guard operations during volume encryption conversion

[ZStack-Robot]

Summary

Prevent conflicting volume and VM operations while volume encryption conversion is in progress.

Changes

• Add a dedicated converting volume status and manage its conversion lifecycle.
• Reject VM start, migration, snapshot, and storage mutations during conversion.
• Add ZBS integration coverage for guarded operations and status recovery.

Testing

• cbok zsv groovy_test ZbsVolumeEncryptionCase (recorded in commit)
• CI pipeline

Depends on: !10539

Resolves: ZSV-12664

sync from gitlab !10544

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Review details

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 5e77c29c-9749-4f4a-8f26-5b8c0dec7f38

📥 Commits

Reviewing files that changed from the base of the PR and between f78c317 and ba75bea.

⛔ Files ignored due to path filters (1)

• conf/springConfigXml/VolumeManager.xml is excluded by !**/*.xml

📒 Files selected for processing (8)

• header/src/main/java/org/zstack/header/volume/VolumeStatus.java
• storage/src/main/java/org/zstack/storage/encrypt/VolumeEncryptedMigrateVmExtension.java
• storage/src/main/java/org/zstack/storage/encrypt/VolumeEncryptedMigrateVmWithStorageExtension.java
• storage/src/main/java/org/zstack/storage/encrypt/VolumeEncryptedStartExtension.java
• storage/src/main/java/org/zstack/storage/encrypt/VolumeEncryptionConversionGuard.java
• storage/src/main/java/org/zstack/storage/snapshot/group/VolumeSnapshotGroupBase.java
• storage/src/main/java/org/zstack/storage/volume/VolumeBase.java
• test/src/test/groovy/org/zstack/test/integration/storage/primary/addon/zbs/ZbsVolumeEncryptionCase.groovy

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch sync/zstackio/codex/volume-encryption-conversion-operation-guard

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