chore: replace cypress with vitest (remaining components)

[J-Sek]

closes #21472 (draft PR)

• VToolbar - no problems
• VDivider - no problems
• VThemeProvider - no problems
• VLayout requires visibility assertion - split to chore(VLayout): replace cypress with vitest #21795
• VItemGroup - no problems
• VHover - no problems
• VOverlay
  • requires visibility assertion for 2 out of 4 tests
  • flaky at VOverlay.spec.browser.tsx:141
• VDataTableServer
  • requires update (or fix) to last test case update:options emits 4 times instead of 3
• VInfiniteScroll - no problems
• VExpansionPanels - no problems
• VForm
  • requires routing for the last test case
• VList - split to chore(VList): replace cypress with vitest #21810
• VTabs - split to chore(VTabs): replace cypress with vitest #21809
• VDataTable - no problems
• VTimeline - no problems, reduced duplication

[KaelWD]

I assume this replaces #21472?

[J-Sek]

I assume this replaces #21472?

I was not aware of this one. It will be interesting to compare. Yes, we can drop this old PR.