[Popper] Remove deprecated props

[siriwatknp]

Summary

Remove the deprecated components and componentsProps props from the Popper component.

Breaking change

The components and componentsProps props have been removed. Use slots and slotProps instead:

 <Popper
-  components={{ Root: CustomRoot }}
-  componentsProps={{ root: { className: 'custom' } }}
+  slots={{ root: CustomRoot }}
+  slotProps={{ root: { className: 'custom' } }}
 />

Use the popper-props codemod for automated migration:

npx @mui/codemod@latest deprecations/popper-props <path>

Changes

• Removed components and componentsProps from component source, types, and PropTypes
• Removed testLegacyComponentsProp from conformance tests
• Added migration guide entry in upgrade-to-v9.md
• Regenerated API docs via pnpm proptypes && pnpm docs:api

Test plan

• pnpm prettier passes
• pnpm eslint passes
• pnpm typescript passes
• pnpm test:unit Popper passes (25 tests)

[mui-bot]

Netlify deploy preview

• docs/data/material/migration/upgrade-to-v9/upgrade-to-v9.md

Bundle size report

Bundle	Parsed size	Gzip size
@mui/material	▼-60B(-0.01%)	▼-25B(-0.02%)
@mui/lab	0B(0.00%)	0B(0.00%)
@mui/system	0B(0.00%)	0B(0.00%)
@mui/utils	0B(0.00%)	0B(0.00%)

Details of bundle changes

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