fix: assign network value to get info response

[secretnamebasis]

Description

GetInfo's RPC handler only ever assigns result.Network inside the globals.IsSimulator() branch ("Simulator") — there's no corresponding branch for a real mainnet or testnet node, so Network is left as an empty string for every non-simulator daemon. This fix adds the missing else if globals.IsMainnet() / else branches so a real node correctly reports "Mainnet" or "Testnet".

Directly observed independently: running get info through a wallet client against a live mainnet node returned a completely blank Network: field, while every other GetInfo_Result field (height, difficulty, version, etc.) was populated normally — isolating the bug to this one unset field rather than a broader RPC failure.

Fixes # (no tracked issue number)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• This will require a HardFork to be enabled

Which part is impacted?

• Wallet
• Daemon
• Miner
• Explorer
• Simulator
• Misc (documentation, comments, text...)

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas (four-line, self-explanatory change; no new comments needed)
• My changes generate no new warnings

License

I am contributing & releasing the code under DERO Research License (which can be found here).