chore (SW-834): Upgrade to Next 15
* wip: apply codemod and upgrade swc plugin
* wip: design-system to react 19, fix issues from async (search)params
* wip: fix remaining issues from codemod
serverClient is now async because context use headers()
getLang is now async because it uses headers()
* Minor cleanup
* Inline react-material-symbols package
Package is seemingly not maintained any more and doesn't support
React 19. This copies the package source into `design-system`,
makes the necessary changes for 19 and export it for others to use.
* Fix missing awaits
* Disable modal exit animations
Enabling modal exit animations via isExiting prop is causing
modals to be rendered in "hidden" state and never unmount.
Seems to be an issue with react-aria-components,
see https://github.com/adobe/react-spectrum/issues/7563.
Can probably be fixed by rewriting to a solution similar to
https://react-spectrum.adobe.com/react-aria/examples/framer-modal-sheet.html
* Remove unstable cache implementation and use in memory cache locally
* Fix ref type in SelectFilter
* Use cloneElement to add key prop to element
Approved-by: Linus Flood
cleanup profile page html to be valid
replace old temp design system components with new ones
divider is now correctly an hr element
less section elements to be valid html
