fix(op-deployer): correct initial-bond parsing condition in AddGameTypeCLI

[radik878]

• Problem: The error handling after parsing the initial-bond flag was inverted. On successful parse, the code returned an error; on parse failure, it assigned the (nil/invalid) value. This caused valid inputs to be rejected and invalid inputs to proceed until failing later in config validation.
• Why fix: The bug breaks normal CLI usage, makes error messages misleading, and can lead to confusing runtime failures. Correct handling ensures valid bonds are accepted, invalid inputs are rejected early with a clear error, and downstream checks behave as intended.

[Inphi]

/ci authorize ff5fc56