chore: Remove Stack Overflow from README

[antonis]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring

📜 Description

emove Stack Overflow from README

💡 Motivation and Context

Fixes #5727

💚 How did you test it?

📝 Checklist

• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled
• I updated the docs if needed.
• I updated the wizard if needed.
• All tests passing
• No breaking changes

🔮 Next steps

#skip-changelog

[github-actions]

Semver Impact of This PR

⚪ None (no version bump detected)

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Generated by 🚫 dangerJS against 05301df

[Copilot]

Pull request overview

This PR removes the Stack Overflow badge/link from the README.md file, aligning with a similar cleanup performed in the sentry-cocoa repository. This is a straightforward documentation maintenance task that removes a support channel reference from the project's resource list.

Changes:

• Remove Stack Overflow badge from the Resources section in README.md

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