breaking: remove support for Svelte 4 #30692
Description
What would you like / Why is this needed?
Component Testing Svelte 5 support in #29641 requires quite a few typings and implementation changes to the test harness. Since users can always download an older version of the testing harness and svelte doesn't usually backpatch releases, we are going to move @cypress/svelte in Cypress 14 to support svelte 5 and up remove support for svelte 14