Provider agent incorrectly computes costs

[nieznanysprawiciel]

It seems that usage counters are incorrect

[2024-03-08T16:23:10.132+0000 INFO  ya_provider::payments::payments] Updating cost for activity [da6e99fff70b451aaf06d3ec4f7b9ad9]: 0.03217862825555556, usage [1935.026589, 115.84306172].

And later:

[2024-03-08T16:23:14.374+0000 INFO  ya_provider::payments::payments] Updating cost for activity [da6e99fff70b451aaf06d3ec4f7b9ad9]: 0.03160953899972222, usage [1897.026589, 113.794340399].
...
[2024-03-08T16:23:14.425+0000 INFO  ya_provider::payments::payments] Final cost for activity [da6e99fff70b451aaf06d3ec4f7b9ad9]: 0.03160953899972222.

This results in error during sending invoice:

[2024-03-08T16:23:22.466+0000 ERROR ya_provider::payments::payments] Error issuing invoice: HTTP error requesting POST http://127.0.0.1:7465/payment-api/v1/invoices: 400 Bad Request; msg: 'Requested amount for agreement cannot be lowered. Current amount requested: 0.03217862825555556 Amount on invoice: 0.03160953899972222' Retry in 5s.

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