Fix app version of example app (ostracon #533)

[0Tech]

The subject of the triage:

• Fix the mismatch between "State.Version.Consensus.App" and "State.ConsensusParams.Version.AppVersion" ostracon#533

[loloicci]

This includes 2 issues/fixes.

1. The example app's version is not good / fix it
2. Problem with the upgrade function if it upgrades app version

Though 1's fix is once pushed to tendermint upstream, it is not merged. (tendermint/tendermint#8151). So we will not fix it. It is not a problem if we set the app version in finschia correctly.

2 is under research.

[loloicci]

Problem with the upgrade function if it upgrades app version

It depends on the app's proxyApp.Query().InfoSync(proxy.RequestInfo) 's implementation. Especially, if the client is at the genesis block, there is a known problem that this information is sometimes wrong. tendermint/tendermint#8151 contains the fix for it. Other than that, there is no problem if the client implements it correctly.