Line Chart Graphics is not displaying when yAxisID starts with R or r

### Expected behavior
I used https://www.chartjs.org/docs/latest/samples/line/interpolation.html this sample.
The Linear graphic not displaying on sample codes. There is a yAxisID which is starting with R.

### Current behavior

The Linear graphic should display on sample codes. There is a yAxisID which is starting with R.

### Reproducible sample

https://codepen.io/muhammedalmazzz/pen/MWxbeyM

### Optional extra steps/info to reproduce

_No response_

### Possible solution

_No response_

### Context

_No response_

### chart.js version

4.4.1

### Browser name and version

_No response_

### Link to your project

_No response_