[1334] Made buttons for test notification configuration responsive

[aayush6194]

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Summary

• Updated the to make the buttons for test notification configuration responsive.
• Removed unused imports

[Bahati308]

hello @aayush6194 , after making changes to fronend codebase, run these commands
1.cd frontend and then npm run format .

[Bahati308]

You can attach the screenshots or the video.