{Storage-Preview} az storage account migration: Remove cmd group as it has been GA in main repo, Remove DATA_COSMOS_TABLE and DATA_STORAGE

[calvinhzy]

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[azure-client-tools-bot-prd]

Hi @calvinhzy,
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in setup.py as well.

[azure-client-tools-bot-prd]

❌Azure CLI Extensions Breaking Change Test

❌storage-preview

rule	cmd_name	rule_message	suggest_message
❌ 1012 - SubgroupRemove	storage account migration	sub group storage account migration removed	please confirm sub group storage account migration removed

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

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[Copilot]

Pull Request Overview

This PR aligns the storage-preview extension with GA changes by removing preview-specific command groups and utilities, bumping the extension version, and updating test recordings.

• Bump extension version to 1.0.0b7.
• Remove short-lived SAS helper functions and the preview migration test, as migration has GA elsewhere.
• Update test imports and refresh recorded interaction fixtures with new timestamps and headers.

Comments suppressed due to low confidence (1)

src/storage-preview/HISTORY.rst:1

• Please add a new entry in HISTORY.rst for version 1.0.0b7, summarizing the version bump and removed preview utilities.

.. :changelog:

[azclibot]

[Release] Update index.json for extension [ storage-preview-1.0.0b7 ] : https://dev.azure.com/msazure/One/_build/results?buildId=130828251&view=results