Allow changing toast close button position

[unaicostana]

While testing the library, I noticed an unusual behavior: the default close button on toast notifications is positioned in the top-left corner rather than the more conventional top-right corner.

Is there a way to change the placement of this button? If not, I believe adding this option would be a valuable improvement, as the current positioning may feel unintuitive or inconvenient for some users.

Thank you,