Remove Alert on Theme Change

[AnushkaChouhan25]

Title and Issue number

Title: Remove Toast Notification on Theme Change

Issue No.: #274

Close #274

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Screenshots/Video (mandatory)

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Checklist:

• I have mentioned the issue number in my Pull Request.
• I have commented my code, particularly in hard-to-understand areas.
• [x ] I have created a helpful and easy-to-understand README.md if it's a new page/tech stack.
• I have gone through the contributing.md file before contributing.

Additional context (Mandatory):

Are you contributing under any Open-source programme?

• I'm a GSSOC-EXT contributor
• I'm a HACKTOBERFEST contributor

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[github-actions]

Thank you for submitting your pull request! 🙌 We'll review it as soon as possible. In the meantime, please ensure that your changes align with our chaotic CONTRIBUTING.md. If there are any specific instructions or feedback regarding your PR, we'll provide them here. Thanks again for your contribution! 😊

[github-actions]

🎉🎉 Thank you for your contribution! Your PR #278 has been merged! 🎉🎉

[Anuj3553]

Well done @AnushkaChouhan25