fix: Appcontroller respects sync windows

[ccjette-logmein]

Closes #11817

Fix rationale
I have followed this hint to guide the solution choice.

I have found that this is the easiest way to solve the current problem, which is to simply keep the operation running while the sync window is in effect. Otherwise, I feel like a new Suspended or Pending OperationState would be needed to properly reflect the interaction with the SyncWindow, and it would have warranted a bigger re-work.

In the tests I have made, failing the operation created a loop with the ApplicationSet controller, because it rescheduled the same operation all the time. This would also have required a bigger re-work in the ApplicationSet controller logic.

This is my first PR so please do not hesitate to tell me if you see problems related to this.

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49.51%. Comparing base (f87897c) to head (b067325).
Report is 1 commits behind head on master.

❗ Current head b067325 differs from pull request most recent head cea00d3. Consider uploading reports for the commit cea00d3 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #16492      +/-   ##
==========================================
- Coverage   49.73%   49.51%   -0.22%     
==========================================
  Files         274      271       -3     
  Lines       48948    47805    -1143     
==========================================
- Hits        24343    23670     -673     
+ Misses      22230    21796     -434     
+ Partials     2375     2339      -36     

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[jannfis]

LGTM, thanks!