Refresh auth context while polling for clustergroup backupschedule

[rnarenpujari]

1. What this PR does / why we need it:

Missed one case in this earlier PR: #390

The acceptance tests for this resource are failing for a different reason and that is being tracked separately. This is a minor change and should not cause any regression.

2. Which issue(s) this PR fixes

    (optional, in `fixes #<issue number>` format, will close the issue(s) when PR gets merged):
   
    Fixes #
   

3. Additional information

4. Special notes for your reviewer

[vmwclabot]

@rnarenpujari, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit 1ca7d5a must be signed by rnarenpujari@gmail.com

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 25.23%. Comparing base (db5c3cd) to head (ff99714).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #393   +/-   ##
=======================================
  Coverage   25.23%   25.23%           
=======================================
  Files         195      195           
  Lines       16908    16908           
=======================================
  Hits         4267     4267           
  Misses      12423    12423           
  Partials      218      218           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[eastaga]

lgtm

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days. This helps our maintainers find and focus on the active issues.

If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.