Tune ESLint object/type literal wrapping for multiline indentation

[Copilot]

ESLint was allowing awkward mixed-line formatting for object literals and TypeScript type literals, which prevented IDE autofix from consistently expanding multiline structures into one-property-per-line blocks. This updates the shared package ESLint configs so multiline objects and TS return type literals wrap cleanly, while single-property forms can remain inline.

• ESLint codestyle override

  • Add an explicit @stylistic/object-curly-newline override to each package eslint.config.mjs
  • Require line breaks for multiline:
    • object expressions
    • object patterns
    • TypeScript type literals
  • Preserve inline formatting for single-property cases

• Formatting outcome

  • IDE formatting and eslint --fix now normalize previously accepted forms like:

mockCurrentSelection({
  isBlockIndex: true,
  blockIndex: 1,
});

function dispatchCopyEvent(): {
  preventDefault: jest.Mock;
  setData: jest.Mock;
} {
}

• Scope
  • Applies consistently across all package-local ESLint configs in the monorepo so the formatting behavior is uniform regardless of workspace

[github-actions]

Unit Tests

Package	Coverage	Delta
@editorjs/collaboration-manager	85.81%	0% ⚪️
@editorjs/model	98.25%	0% ⚪️
@editorjs/core	89.55%	0% ⚪️
@editorjs/dom-adapters	86.95%	0% ⚪️
@editorjs/ot-server	20%	0% ⚪️

Mutation Tests

Package	Mutation score	Dashboard URL
@editorjs/collaboration-manager	No files to mutate found.
@editorjs/core	No files to mutate found.
@editorjs/dom-adapters	No files to mutate found.
@editorjs/model	No files to mutate found.