Resolving promises before returning from the method in Storage SDK

[kotewar]

Packages impacted by this PR

@azure/storage-blob

Issues associated with this PR

• Download from Blob storage gets stuck sometimes and never completes #22321
• Action can wait for at least 27 minutes when no progress is being made on the download actions/cache#810

Describe the problem that is addressed by this PR

Sometimes download gets hanged when trying to download a file from the Azure blob storage using the SDK. This is intermittent but we noticed the promises were not resolved at places and suspecting some corner case when concurrency is enabled that could be causing this. Hence resolving promises and added corner conditions just to be extra cautious.

What are the possible designs available to address the problem? If there are more than one possible design, why was the one in this PR chosen?

Used the existing design pattern to fix the bug

Are there test cases added in this PR? (If not, why?)

Provide a list of related PRs (if any)

Command used to generate this PR:**(Applicable only to SDK release request PRs)

Checklists

• Added impacted package name to the issue description
• Does this PR needs any fixes in the SDK Generator?** (If so, create an Issue in the Autorest/typescript repository and link it here)
• Added a changelog (if necessary)

[ghost]

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

[github-actions]

Hi @kotewar. Thank you for your interest in helping to improve the Azure SDK experience and for your contribution. We've noticed that there hasn't been recent engagement on this pull request. If this is still an active work stream, please let us know by pushing some changes or leaving a comment. Otherwise, we'll close this out in 7 days.