@metamask/foundryup "Invalid version" should not check version starts with 'v'

E.g. when running `yarn mm-foundryup install --version=stable`

It checks if it is a valid version string starting with 'v'.
However, options description of the `--version`: Specify the version (see: https://github.com/foundry-rs/foundry/tags) [default: "nightly"]

Both nightly and stable are valid tags. This logic should be removed or changed to allow `stable` or `nightly` tag/version.

https://github.com/MetaMask/core/blob/afd5e91404cf6da2a28ed87e7ec3652f4b7aa08b/packages/foundryup/src/options.ts#L17-L25

Start with packages/foundryup/src/options.ts, especially the validation around the --version option, and reproduce the issue with yarn mm-foundryup install --version=stable. Check the existing version rules against the option description and Foundry tags; done means stable and nightly are accepted without breaking valid version handling.

Written by the indexing model from the issue text.