[SnackbarContent] Fix square prop not working

[0210shivam]

Summary

This PR fixes an issue where the square prop on <SnackbarContent /> was not working as expected. Previously, the SnackbarContentRoot component always applied a border radius, overriding the default behavior of the underlying <Paper /> component even when square was set to true.

What’s Changed

• Removed the hardcoded borderRadius from SnackbarContentRoot to allow the square prop to behave correctly via the underlying <Paper />.
• Added test cases to verify that the MuiPaper-rounded class is:
  • not applied when square={true}
  • applied when square is not provided (default behavior)

Test Coverage

Added tests to ensure:

• The square prop disables the MuiPaper-rounded class.
• The default behavior (when square is not passed) applies the MuiPaper-rounded class.

Related Issue

Fixes #46191

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[0210shivam]

Hey @ZeeshanTamboli , I have fix the prop issue. Could you please review the PR and let me know if there’s anything else needed? Thanks!

[astjohnpaycor]

@0210shivam Thank you for your prompt attention, but I believe the proper change would be to remove that hard-coded border-radius completely. The component already is inheriting the proper border-radius from the Paper styles, and already adjusts it based on whether square is true or not. The issue is that the original Paper styling is getting overridden by the hard-coded border-radius in this component.

You can see the same fix was made to the Alert component at one point: https://github.com/mui/material-ui/pull/30027/files

[0210shivam]

@astjohnpaycor Thanks for the feedback! I’ve made the changes and removed the hard-coded border-radius. Please let me know if there’s anything else to address.

[ZeeshanTamboli]

@0210shivam The logic looks good. Could you please add a test case?

[0210shivam]

The logic looks good. Could you please add a test case?

Sure, I’ll add a test case and update the code shortly. Thanks for reviewing.

[0210shivam]

@ZeeshanTamboli I’ve added the test case. Please take another look when you get a chance. Let me know if anything else is needed. Thanks again for the review!