[WIP/Parked] Vesta upgrade to React 19

[dtm2451]

The PR is saves the state of an incomplete upgrade that ended up not being needed. It upgrades vesta to use a Node 24 base image, React 19, Nextjs 15, and MaterialUI v6.1.1 conssitently (instead of mixing that MUI v6.1.1 with some v5.0.0-alpha).

Most Material UI elements were able to be reconnected with just updates to 'import' lines, but some components were changed in breaking ways or removed altogether:

• <FocusTrap> component was removed altogether from MUI, but could be just safely deleted from the location it was used (mobile-render main nav menu).
• <Option> component was removed altogether from MUI. Commit 0ca7d93 includes incomplete code changes that attempted to replace the component with <MenuItem>. Likely fixable simply, but it appeared that <Select> behavior or something else acted different in the the update. Used for mobile-render (thin browser window) selection of the stats graph time-scale in the main about page.
• The Related Resources menu became busted by a change that was not attempted to be fixed at the time.
• Changes to 'vesta/vesta_ui/src/theme.ts' seem in line with version updates, but their necessity / continued functionality was not confirmed.

Also:

Also note:

• The visx dependency did not have a full release with compatibility for React 19 yet, so an alpha version was used. Likely that can be corrected to a stable-release by the time we might come back to this work.