Add support for TypedArray views that dynamically track the length of
resizable ArrayBuffers. When a TypedArray is constructed without an
explicit length parameter, it now operates in auto-length mode where
the length is recomputed based on the current buffer size.

Implementation:
- Added boolean isAutoLength field to track auto-length mode
- Removed final modifier from length field to allow dynamic updates
- Created updateLength() method that recomputes length for auto-length views
- Length is computed as: floor((bufferByteLength - offset) / elementSize)
- Returns 0 when view is out of bounds (offset > buffer length)
- updateLength() is called in isTypedArrayOutOfBounds() before bounds checks

This approach minimizes code changes while maintaining compatibility with
existing code that directly accesses the length field.

Per ES2025 specification section 10.4.5.3

- Fix auto-length logic to only apply to resizable ArrayBuffers
- Add isResizable() public method to NativeArrayBuffer
- Improve JavaDoc to follow Rhino's concise documentation style
- Add helper method determineViewLength() for clearer logic
- Update test262.properties: 32 additional tests now passing
  - Array: 4 tests (find family with resize callbacks)
  - TypedArray: 28 tests (from, of, and prototype methods)

- Updated js_at() to call validateAndGetLength() before accessing elements
- Enhanced isTypedArrayOutOfBounds() to check if fixed-length TypedArrays
  on resizable buffers have gone out of bounds when buffer is resized
- Properly throws TypeError when accessing out-of-bounds views per ES2024

TypedArray out-of-bounds checking improvements enable 58 more tests to pass.
All return-abrupt-from-this-out-of-bounds tests now passing across TypedArray
prototype methods. Fixed-length TypedArray property tests on resizable buffers
also passing.