[EuiRange] Migrate from class to function component #9494
Description
EuiRange provides a single-handle range slider with optional tooltip, ticks, levels, and input field.
- File:
components/form/range/range.tsx - Class size: 293 lines
- State:
id,isPopoverOpen,trackWidth - Lifecycle: None
Migration notes:
No lifecycle methods despite size. State is simple. Complexity is in the input/slider coordination and tooltip positioning. Should be migrated together with or before EuiDualRange.
Acceptance criteria:
- Convert to function component with hooks
- Maintain slider/input coordination
- All existing tests pass