Big Number + Big Number with Trendline get cut off on dashboards

[yousoph]

Bug description

Repro:

1. Create a Big Number chart or a Big Number with Trendline chart
2. in the Customize tab, set the font size to Normal, large or huge (this bug seems harder to repro when the font size is Small or Tiny, but it might still be possible)
3. Save the chart and add it to a dashboard

Currently, the numbers on the right get cut off easily. Typically, giving the chart a lot more horizontal space will fix the issue, but the font should resize correctly to not be cut off if there's not enough space.

Screenshots/recordings

Superset version

master / latest-dev

Python version

3.9

Node version

16

Browser

Chrome

Additional context

No response

Checklist

• I have searched Superset docs and Slack and didn't find a solution to my problem.
• I have searched the GitHub issue tracker and didn't find a similar bug report.
• I have checked Superset's logs for errors and if I found a relevant Python stacktrace, I included it here as text in the "additional context" section.

[geido]

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[fardin-developer]

Hey would love to work on this issue.