fix: load genesis path from config when executue newApp

[SunSet0418]

Summary of Bug

There is a problem in the process of loading ChainID from genesis in newApp.

Version

after v10

Steps to Reproduce

1. Build the after v10 binary.
2. Move genesis.json from the default genesis path, config/genesis.json, to a random path.
3. In config/config.toml, modify the genesis_file path to a random path where you moved genesis.json.
4. When you run gaiad start, an error occurs saying that genesis.json cannot be found in config/genesis.json (default path), not in the genesis_file path of the configuration file.

Screenshots

Additional context

ref https://github.com/Stride-Labs/stride/pull/765/files#diff-077a894e9abf8c78345c15241797043740704906b66877a01beea7dc417be647R306

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