Page enhancements - add page headers to mobile reports (#2733)

* Refactor Page component and use in report pages

* Release notes

* Fix typecheck error and budget table background

* Update pages

* VRT updates

* Reports page data-testid

* VRT updates

* Updates

* VRT

* Paddings

* Put create new custom report in page header

* Cleanup

* Feedback

* VRT

* Fix graph sizes in mobile

* Update flex grow

* VRT