Refactor, and a numRowsPerPage option

[severo]

Add an explicit numRowsPerPage option instead of reusing padding

Remove dependency on padding and overscan in Slice.

Remove dependence on padding in Scroller.

[Copilot]

Pull request overview

This PR refactors the virtualization logic by introducing an explicit numRowsPerPage option for keyboard navigation, decoupling it from the padding prop. The refactoring moves padding calculations into the RowsAndColumnsProvider, creating a cleaner separation of concerns where Scroller handles viewport management, the provider computes padded ranges, and Slice handles rendering.

Key Changes

• Added numRowsPerPage prop specifically for keyboard navigation (PageUp/PageDown), replacing the overloaded use of padding
• Refactored RowsAndColumnsContext to provide rowsRangeWithPadding instead of raw rowsRange, with padding calculations centralized in the provider
• Updated Scroller and Slice components to consume the new rowsRangeWithPadding interface

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/components/HighTable/constants.ts	Added defaultNumRowsPerPage constant for keyboard navigation
src/contexts/RowsAndColumnsContext.ts	Introduced RowsRangeWithPadding interface and updated context to provide padded range
src/providers/RowsAndColumnsProvider.tsx	Added padding calculation logic and exposed rowsRangeWithPadding instead of raw rowsRange
src/components/HighTable/Wrapper.tsx	Updated prop threading to pass padding to provider and removed it from Scroller
src/components/HighTable/Slice.tsx	Removed padding prop dependency, now uses numRowsPerPage for keyboard navigation and rowsRangeWithPadding from context
src/components/HighTable/Scroller.tsx	Removed padding prop dependency, now uses rowsRangeWithPadding from context
src/components/HighTable/HighTable.keyboard.test.tsx	Updated test to use numRowsPerPage instead of padding
README.md	Added documentation for the new numRowsPerPage option

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