Add missing __experimental__naiveDimensions to LenisOptions type

[Copilot]

TypeScript compilation error in generated dist/lenis.d.ts: property __experimental__naiveDimensions referenced in constructor but missing from LenisOptions type definition.

Changes

• packages/core/src/types.ts: Added __experimental__naiveDimensions?: boolean to LenisOptions interface with @deprecated JSDoc annotation
• packages/core/src/lenis.ts: Added __experimental__naiveDimensions to OptionalPick utility type parameters for the options field

The __experimental__naiveDimensions parameter exists in the constructor as a deprecated alias that gets converted to naiveDimensions during initialization. This change aligns the type definition with the actual implementation.

Original prompt

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This section details on the original issue you should resolve

<issue_title>TypeScript error</issue_title>
<issue_description>```

❌ Found 1 error in 1 file:

File: lenis@1.3.17/dist/lenis.d.ts (1 error)

Line 316, Col 24: TS2339 - Property '__experimental__naiveDimensions' does not exist on type 'LenisOptions'.
allowNestedScroll, __experimental__naiveDimensions, naiveDimensions, stopInertiaOnNavigate, }?: LenisOptions);

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• Fixes TypeScript error #493

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