feat: file/folder validation(WPB-23623)

[arjita-mitra]

WPB-23623 [Web] Consolidate File & Folder Name Validation Rules to avoid Android Crash and App issues

Summary

Description
Implement consistent validation rules for file and folder names for upload + rename + creation

Rules
Disallow characters: \ , /and "

Reject names starting with .

Reject name equal to .

Allow . elsewhere in names (e.g., file.txt, my.folder)

Name should be under 64 characters

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Security Checklist (required)

• External inputs are validated & sanitized on client and/or server where applicable.
• API responses are validated; unexpected shapes are handled safely (fallbacks or errors).
• No unsafe HTML is rendered; if unavoidable, sanitization is applied and documented where it happens.
• Injection risks (XSS/SQL/command) are prevented via safe APIs and/or escaping.

Accessibility (required)

• I have read and this PR upholds our Accessibility Best Practices.

Standards Acknowledgement (required)

• I have read and this PR upholds our Coding Standards and Tech Radar Choices.

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Screenshots or demo (if the user interface changed)

Notes for reviewers

• Trade-offs:
• Follow-ups (linked issues):
• Linked PRs (e.g. web-packages):

[github-actions]

🔗 Download Full Report Artifact

🧪 Playwright Test Summary

• ✅ Passed: 14
• ❌ Failed: 0
• ⏭ Skipped: 0
• 🔁 Flaky: 0
• 📊 Total: 14
• ⏱ Total Runtime: 454.4s (~ 7 min 34 sec)

[sonarqubecloud]

Quality Gate failed

Failed conditions
18.3% Duplication on New Code (required ≤ 5%)

See analysis details on SonarQube Cloud