Upgrade to MUI v6

[Copilot]

MUI v6 Upgrade Plan

• Update root package.json to use MUI v6 dependencies
  • Update @mui/material from 5.16.7 to 6.5.0
  • Update @mui/icons-material from 5.16.7 to 6.5.0
  • Update @mui/x-date-pickers from 7.12.1 to 8.26.0
  • Update @mui/x-date-pickers-pro from 7.12.1 to 8.26.0
  • Update date-fns from 2.30.0 to 4.1.0 (required for MUI X v8)
• Update peerDependencies in package packages
  • Update formik-mui package.json peer dependency for @mui/material to support v6
  • Update formik-mui-x-date-pickers package.json peer dependencies for @mui/material and @mui/x-date-pickers
• Fix vitest configuration for MUI v6 ESM compatibility
  • Add resolve conditions for proper module resolution
  • Add server.deps.inline for @mui packages
• Install dependencies and verify no conflicts
• Run typecheck to verify TypeScript compatibility
• Run builds to ensure packages compile correctly
• Update test snapshots to match MUI v6 changes
• Run linting to ensure code quality
• Code review and security check completed
• Revert unnecessary formatting changes

Summary

Successfully upgraded formik-mui to support MUI v6:

• All packages build successfully
• All tests pass (13 tests in formik-mui, 13 tests in formik-mui-x-date-pickers)
• No security vulnerabilities found in new dependencies
• Linting passes
• TypeScript compilation succeeds

The main changes include:

1. Dependency upgrades with backward compatibility maintained via peer dependencies
2. Vitest configuration updates to handle MUI v6's ESM module structure
3. Test snapshot updates to reflect MUI v6's rendering changes
4. Reverted unnecessary formatting changes in date picker interface definitions

Original prompt

Upgrade project to mui 6

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[cliedeman]

please remove the uncessary formatting. Also handle the other places

[Copilot]

Reverted the formatting changes in all 12 date picker files (13465ae)