chore: Update Mantine

[matthewlipski]

Summary

This PR updates @mantine/core and @mantine/hooks to version 8.3.4.

Closes #2062

Rationale

Mantine 8.3.3 had an issue which caused errors due to missing files (see #2062). We we previously on version ^8.3.2, but due to semantic versioning and being a peer dependency, installing Mantine would run into this issue. This was also causing the StackBlitz demos on the website to fail.

Since the newest version is now 8.3.4, this issue should be pretty much fixed on its own. But for good measure, we should still update to ^8.3.4 ourselves.

Changes

Updated all package.json and package.json template to have the updated Mantine package versions. Updated package-lock.yaml.

Impact

N/A

Testing

N/A

Screenshots/Video

N/A

Checklist

• Code follows the project's coding standards.
• Unit tests covering the new feature have been added.
• All existing tests pass.
• The documentation has been updated to reflect the new feature

Additional Notes

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Project	Deployment	Preview	Updated (UTC)
blocknote	Ready	Preview	Oct 10, 2025 10:56am
blocknote-website	Ready	Preview	Oct 10, 2025 10:56am

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commit: 0092802