Toast DOM nodes are leaked

[Ducklett]

Steps to reproduce:

• Go to https://sonner.emilkowal.ski/
• Open Chrome devtools Performance monitor and Memory tabs
• Run the garbage collector in the Memory tab and take note of the DOM nodes count in Performance monitor
• Click the button to create a toast and wait for it to disappear
• Run the garbage collector again
• Create a memory snapshot, you'll notice the DOM nodes count has increased and the memory snapshot has a Detached <li tabindex="0" class="" data-sonner-toast="" --
• Repeat and watch DOM node count increase linearly with each toast() call