Refactor DownloadRequest Stream function

[blackpiglet]

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Please add a summary of your change

• Fix PR Linter part2 #7151 introduced context bug.
• Refactor the DownloadRequest Stream function. Split it into two parts: GetDownloadURL and Download.
• Refactor the context usage to replace the wait logic.

Does your change fix a particular issue?

Fixes #(issue)

Please indicate you've done the following:

• Accepted the DCO. Commits without the DCO will delay acceptance.
• Created a changelog file or added /kind changelog-not-required as a comment on this pull request.
• Updated the corresponding documentation in site/content/docs/main.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f2ba625) 61.80% compared to head (c8e76f4) 61.80%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7175   +/-   ##
=======================================
  Coverage   61.80%   61.80%           
=======================================
  Files         261      261           
  Lines       27968    27968           
=======================================
  Hits        17286    17286           
  Misses       9465     9465           
  Partials     1217     1217           

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[reasonerjt]

lgtm