`--log_level json` is not providing the expected log output

[artemijspavlovs]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

start the rollapp with --log_format json

Expected behavior

the logs are outputted as json

Screenshots

$ rollapp_evm start --log_format json
INFO[0000] starting node with ABCI dymint in-process[]
INFO[0000] service start[msg Starting multiAppConn service impl multiAppConn]  module=proxy
INFO[0000] service start[msg Starting localClient service impl localClient]  connection=query module=abci-client
INFO[0000] service start[msg Starting localClient service impl localClient]  connection=snapshot module=abci-client
INFO[0000] service start[msg Starting localClient service impl localClient]  connection=mempool module=abci-client
INFO[0000] service start[msg Starting localClient service impl localClient]  connection=consensus module=abci-client
INFO[0000] service start[msg Starting EventBus service impl EventBus]  module=events
INFO[0000] service start[msg Starting PubSub service impl PubSub]  module=pubsub

Desktop (please complete the following information):

• OS: Ubuntu 22.04.4 LTS