* build: upgrade vite to 5.x, vitest to 2.x and related vite packages
* upgrade vitest-ui and coverage
* pass empty set to fix type error and update snap
* set ignoreEmptyLines to false
* update threshold
* update coverage threshold
* downgrade vite-plugin-pwa as its better to push separately with testing
* add package resolutions for strip-ansi, string-width and wrap-ansi
* disable pwa
* only add resolution for strip-ansi
* Introducing fractional indices as part of `element.index`
* Ensuring invalid fractional indices are always synchronized with the array order
* Simplifying reconciliation based on the fractional indices
* Moving reconciliation inside the `@excalidraw/excalidraw` package
---------
Co-authored-by: Marcel Mraz <marcel@excalidraw.com>
Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>