`custom reward address` not validated

[mtsitrin]

when creating sequencer,
when asked for custom reward address, it's not validated, thus causing the tx to fail.

would you like to use a custom reward address (leave empty to use the sequencer address): 0xc2D285609A826F73bB4d607EfD772f2f98270E75


would you like to proceed with bonding the sequencer? [y/N]: Yes
Error: get reward addr from bech32: invalid argument
decoding bech32 failed: string not all lowercase or all uppercase
Usage:
  dymd tx sequencer create-sequencer [pubkey] [rollapp-id] [bond] [metadata] --reward-address [reward_addr] --whitelisted-relayers [addr1,addr2,addr3] [flags]

  ERROR   failed to register sequencer:  command finished with error: exit status 1