[ResourceMonitoring] Abnormal numbers for cpu.time and memory.usage

### Description

We are using latest `Microsoft.Extensions.Diagnostics.ResourceMonitoring` (9.8.0) and recently added `container.cpu.time` and `container.memory.usage` metrics. I am a little bit confused by numbers I see. They are not even close to numbers from k8s.

Our configuration:
* There are sidecar containers in pod
* cpu.limit < 1 (in case you use it for scaling internally)

### Reproduction Steps

Collect new metrics

### Expected behavior

Numbers similar to metrics from k8s

### Actual behavior

Unrealistic numbers

### Regression?

_No response_

### Known Workarounds

_No response_

### Configuration

_No response_

### Other information

_No response_