fix(miner): fix new bug in StateMinerPreCommitDepositForPower calculation

[rvagg]

Regression introduced by refactoring in #12384 where the NV16 special case was missed and the full sector weight calculation was applied. The lack of this special case essentially reverts FIP-0034 for this API, but not for actors which would have a different PCD calculation.

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Not doing a CHANGELOG for this one because #12384 hasn't got to a final release yet.

Also haven't included a test here, even though I'd love to, because I don't have time to figure out how on earth to pull that off. But thanks to @LesnyRumcajs for pointing out the bug due to the Forest compatibility tests where this request:

curl -s -X POST -H "Content-Type: application/json" --data '{"method":"Filecoin.StateMinerPreCommitDepositForPower","params":["f0138097",{"DealIDs":null,"Expiration":3055733,"SealProof":8,"SealRandEpoch":2004533,"SealedCID":{"/":"bagboea4b5abcbp5d7ycbulzvf6ic73ab2zkeebeiasiyndbvpcl5zeqkk776uclm"},"SectorNumber":1990,"UnsealedCid":null},[{"/":"bafy2bzacea6eqwwy7ykvdodl6chmiiytsce7iku7jm6vw4hcy4m66tepfzc3q"},{"/":"bafy2bzacebvrs5yivvqjcbhiqnvnvrfqcend3trk4dzuiqnktfcpgybh7rrpo"},{"/":"bafy2bzacec46lz5fbbzcjdqjnjvecu64564s2k5kyxk5nh7ogu7fuglpkkl5i"}]],"id":1,"jsonrpc":"2.0"}' http://127.0.0.1:1235/rpc/v1 | jq .result

Was resulting in a value of: "26167664014885767245" for 1.30.0-rc when it should be "261676640148857672456" (1.29.2 and Forest).