Text Direction not available according the version changelog for version#0350

I have found no text direction option for SideTitles and AxisTitles as described in this [version#0350 changelog](https://pub.dev/packages/fl_chart/changelog#0350).

Start by reading the version 0.35.0 changelog entry linked in the issue and locating the SideTitles and AxisTitles APIs. Verify how text direction is expected to be exposed for both types, then confirm that the documented option is available and covered by an appropriate test.

Written by the indexing model from the issue text.