Using pi costant into the interval bounds gives error

[desk7]

Describe the bug If I set right=pi or right=\pi, I get error.

Expected behavior The function should be plotted up to x=pi

Desktop (please complete the following information):

• OS: Windows
• Obsidian Version: 1.1.16
• Plugin Version: 0.6.4

Additional context The full code I used is:

```desmos-graph
    left=0; right=pi;
    top=2; bottom=-2;
    grid=false;
    ---
    y=\sin(x)

and also

    left=0; right=\pi;
    top=2; bottom=-2;
    grid=false;
    ---
    y=\sin(x)