When pasting link as first item everything after it gets added

[TriPSs]

Describe the bug When adding a link to the editor that is still completely emtpy, if you then use a space/press next key array, it will add everything tot that link; this does not happen when it's not the first thing in the editor.

To Reproduce

• Open https://stackblitz.com/github/TypeCellOS/BlockNote/tree/main/examples/01-basic/01-minimal?file=App.tsx
• Add URL (eg. https://google.com)
• Press space and add some chars
• Chars are added to the link

Misc

• Node version:
• Package manager:

    "@blocknote/core": "0.14.5",
    "@blocknote/mantine": "0.14.6",
    "@blocknote/react": "0.14.6",

• Browser:
• [ ] I'm a sponsor and would appreciate if you could look into this sooner than later 💖