HybridCache: implement ReportTagMetrics

### Description

The `HybridCacheOptions` API has a `ReportTagMetrics` member; the intent of this was to prevent leaking PII in any metric reporting; however, currently the metrics *do not include that data*.

We should go back and check what scenarios this may be relevant to, with any / all of:

- adding new tag-specific reporting that is *only* enabled with this enabled
- tweaking existing reporting to include additional data with this enabled

### Reproduction Steps

set `ReportTagMetrics` to... whatever

### Expected behavior

Reporting is richer with this enabled

### Actual behavior

You can toggle it all day long, if you find it cathartic. It doesn't do anything useful.