fix: fix ts error for BubbleMenu and FloatingMenu in @tiptap/react

[c0sc0s]

Please describe your changes

useEditor return type is Editor | null

But FloatingMenu and BubbleMenu 's props of editor is Editor | undefined
I have solved it.

[add a description of your changes here]
Change FloatingMenu and BubbleMenu 's props of editor from Editor | undefined to Editor | null

Checklist

• The changes are not breaking the editor
• Added tests where possible
• Followed the guidelines
• Fixed linting issues

Related issues

[add a link to the related issues here]

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