Proposed changes

This PR fixes the Echarts theme defintion i.e Global Echarts Theme including fonts, axis etc, and also fixes the formatter which wasn't working before

more details for this issue -> https://discord.com/channels/1096896040159957084/1519025390008537180

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

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• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules

Further comments

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