Logging/report when PowerManager receives multiple proposals with same priority but different source IDs

### What's needed?

A way to inform users when multiple actors are using the same priority values to control the same batteries.  Although the algorithm is able to handle these cases, it is likely not the desired/intended behaviour.

### Proposed solution

_No response_

### Use cases

_No response_

### Alternatives and workarounds

_No response_

### Additional context

_No response_