chore: replace use of alias in local net scripts with variable declaration

[MalteHerrmann]

This PR removes a footgun for local testing by avoiding the use of alias nobled which is overwriting something that's also globally defined if you have the binary installed. Instead it just assigns to a local variable BIN to ensure the correct binary is used.

[coderabbitai]

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch malte/adjust-local-net-scripts

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