[release-1.15]Add nil check for updating DataUpload VolumeInfo in finalizing phase.

[blackpiglet]

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Does your change fix a particular issue?

Fixes #8440

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• Accepted the DCO. Commits without the DCO will delay acceptance.
• Created a changelog file (make new-changelog) or comment /kind changelog-not-required on this PR.
• Updated the corresponding documentation in site/content/docs/main.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.98%. Comparing base (40b8551) to head (ecd206a).
Report is 2 commits behind head on release-1.15.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-1.15    #8465   +/-   ##
=============================================
  Coverage         58.98%   58.98%           
=============================================
  Files               367      367           
  Lines             38854    38855    +1     
=============================================
+ Hits              22918    22919    +1     
  Misses            14474    14474           
  Partials           1462     1462           

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