fix: React 19 compatibility

[YousefED]

This should make BlockNote compatible with React 19 and Nextjs 15 which was just released

closes #1021

[vercel]

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Name	Status	Preview	Updated (UTC)
blocknote	✅ Ready (Inspect)	Visit Preview	Oct 22, 2024 5:26am
blocknote-website	✅ Ready (Inspect)	Visit Preview	Oct 22, 2024 5:26am

[KingXP-Pythoner]

awesome! hyped to try this

[celljuke]

I'm disappointed I didn't see this in the latest release. I have been waiting for this since it was created.

[KingXP-Pythoner]

I'm disappointed I didn't see this in the latest release. I have been waiting for this since it was created.

I'm sad cause I've been visiting the repo every few hours 😄 but not disappointed as there might be reasons why it didn't drop yet and it makes sense as React 19 is still beta

[celljuke]

Wow! what a fast response. You are awesome @YousefED !!

[celljuke]

I'm disappointed I didn't see this in the latest release. I have been waiting for this since it was created.

I'm sad cause I've been visiting the repo every few hours 😄 but not disappointed as there might be reasons why it didn't drop yet and it makes sense as React 19 is still beta

Sorry for misunderstanding. Maybe i couldn't able to express myself correctly. I am very grateful about the team's incredible work.

[irakli2206]

Damn that was fast! Much appreciated.