[Storage] HttpRange replacement, Etag model replacement

[vincenttran-msft]

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[github-actions]

Next Steps to Merge

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• ⚠️ The check named SDK Validation Status has failed. Refer to the check in the PR's 'Checks' tab for details on how to fix it and consult the aka.ms/ci-fix guide

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[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
TypeSpec	Storage.Blob
Python	azure-storage-blob

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Comment generated by After APIView workflow run.

[catalinaperalta]

Are the headers in the Azure.Core.ConditionalRequestHeaders not typed with etag? That's the reason for this update?

[catalinaperalta]

I'll open an issue to get this fixed in the azure.core types

[catalinaperalta]

Changes seem benign to me, I looked through client.tsp and the languages seem to be changing the conditional header types back to string from etag anyways for other instances. cc @l0lawrence @jeremymeng @gracewilcox @jorgerangel-msft

[catalinaperalta]

@vincenttran-msft please fix the typespec validation error before merging into the base branch