chore: Add prettier check to CI

[tbwebb22]

Add prettier format check for Solidity files (contracts/ and script/) to CI, and add yarn format-contracts convenience command. Also fixes the broken glob in lint-fix.

VSCode / Cursor setup - add this to your workspace or user settings.json:

    "[solidity]": {
        "editor.defaultFormatter": "esbenp.prettier-vscode",
        "editor.formatOnSave": true
    },

This ensures VS Code uses the project's node_modules/prettier and .prettierrc to format Solidity files on save, matching what CI enforces. If you don't want format-on-save, you can omit that line and just run yarn format-contracts before committing.

Closes ACP-47

[linear]

ACP-47 Add prettier format check into contracts repo CI

[grasphoper]

A few Qs:

• Is "editor.defaultFormatter": "esbenp.prettier-vscode", referring to the prettier -- the node module, or prettier -- the vs code extension? If the extension, are there any extra settings to change on the extension for it to use node_modules/prettier and .prettierrc, .prettierignore and something like prettier-plugin-solidity? E.g. can it happen that the extension is overriding the prettierrc config?
• yarn pretty-quick --staged: what prettier path + version is that using?
• should we perhaps upgrade versions of prettier-plugin-solidity, pretty-quick as a part of this change?