Automatic merge from submit-queue (batch tested with PRs 41121, 40048, 40502, 41136, 40759)
Shared informer custom resync periods
**What this PR does / why we need it**: add the ability for event handlers to specify their own distinct resync periods to a shared informer
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#26406
**Special notes for your reviewer**:
This is part of my series of PRs to convert as much of the code base to using generated shared informers as possible. Assuming this merges, we'll also need #40385, and I'll probably close#40097 and replace it with a series of individual PRs (1 per controller change).
Assuming we get close to agreement on the implementation, I can look at adding more unit tests.
**Release note**:
```release-note
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