fix(web): roll back timed-out preview resizes - #4341

💭 Looking at the diff to see what's actually changing here. There are two new files and updates to PreviewAutomationHosts.tsx, which are React components and utilities rather than Effect service definitions. The new previewResizeTransaction.ts file is a pure helper that imports types from the contracts package and uses promises, so it's not relying on Effect services. The test file and the component changes don't introduce or violate any Effect service conventions either — this is all about a promise-based transaction queue for preview resizing. Since there are no Effect service definitions being created or refactored in a way that breaks conventions, this looks fine.