[BUG] Sheet component : TypeError: unsupported operand type(s) for +=: 'NoneType' and 'str'

[cheum]

return Sheet(
^^^^^^
File "/usr/local/lib/python3.12/site-packages/shad4fast/components/sheet.py", line 49, in Sheet
new_cls += f" {cls}"
TypeError: unsupported operand type(s) for +=: 'NoneType' and 'str'

def Sheet(
    *c,
    side="right",
    title=None,
    description=None,
    footer=None,
    standard=False,
    trigger=None,
    state="closed",
    cls=None,
    **kwargs,
):
    header_content = []
    sheet_trigger = None

    `new_cls = None`
    if cls:
        new_cls += f" {cls}"
    kwargs["cls"] = new_cls