Style: Apply WordPress coding standards to blockparty-modal

[firestar300]

Updates the spacing and formatting in index.js to align with WordPress-specific linting rules, including padding inside parentheses and brackets.

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Note

Low Risk
Purely formatting/spacing updates to match WordPress JS coding standards; no functional logic changes expected beyond negligible risk of accidental syntax/JSX typo.

Overview
Applies WordPress JavaScript coding standards to src/blockparty-modal/index.js, mainly by adjusting whitespace/parentheses/bracket spacing and JSX prop formatting.

No behavioral changes are intended; the modal trigger filters, re-registration logic, and inspector control wiring remain the same.

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