🐛 Fix fairydust canvas dimensions + disable fluid pointer events + update documentation

[Vavaste]

Description
fluid and fairydust presents bugs:

1. fairydust cursor doesn't clear particles because canvas dimensions are not setted
2. When fluid cursor is selected you can't click on other cursors to change tab

Reproduce:

1. go to https://cursify.vercel.app/components/fairydust-cursor and move the mouse, particles won't disappear
2. go to https://cursify.vercel.app/components/fluid-cursor and try to change cursor

Screenshots:
1)

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[Vavaste]

@naymurdev for visibility