Move genesis checksum and bech 32 prefix to rollapp update

[danwt]

The GUI tool supplies these in update step but the current on-chain code requires them in creation step. So we will change the on-chain code.

Need to make sure rollapp cannot be used/sealed until these are done

[danwt]

adr needs adjusting too https://www.notion.so/dymension/ADR-x-Implementation-of-RollApp-and-Sequencer-Registration-revision-2-d548ea1d12ba4cf1bf2ae68fe9354332

[danwt]

tests to update

• [ ] create rollapp
• [ ] update rollapp
• [ ] create validate
• [ ] update validate
• [ ] rollapp validate

criteria

• [ ] can create rollapp without genesis check
• [ ] can create rollapp without bech32
• [ ] can update rollapp genesis check
• [ ] can update rollapp bech32
• [ ] cannot seal rollapp until genesis and bech32 are set