* Refactor blocks.ProcessDeposit to return whether or not the deposit resulted in a new validator entry.
* Only mark validator as new after successfully appending it to the state
* fix merge conflict
* fix merge conflict
* gofmt
* fix merge conflict
Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>