[REGRESSION] commandExistsSync incorrectly returns false in some cases

[locksten]

Describe the bug commandExistsSync("somecmd") returns false if somecmd doesn't support the --version option or exits with a non-zero exit code.

To Reproduce Call commandExistsSync("unzip").

Expected behavior It should return true, but returns false instead.

Desktop

• OS: macOS
• Node Version v18.19.0
• RNV Version 1.0.0-rc.21

Additional context Not all commands support --version, so commandExistsSync should not rely on it. Regressed here.