Documentation Is:
Please Explain in Detail...
Linear Radial Axis scale type uses custom drawGrid method that don't use most of the options mentioned in grid configuration at https://www.chartjs.org/docs/latest/axes/styling.html#grid-line-configuration that https://www.chartjs.org/docs/latest/axes/radial/linear.html grid section points to.
Your Proposal for Changes
Create separate docs for Linear Radial Axis grid options, or annotate the default ones, that they don't apply to Linear Radial Axis scale.
Those options should be also excluded from GridLineOptions in RadialLinearScaleOptions['grid']
Example
No response