Files API: [PUT] Check the content of the json payload

[tino097]

Description

Small refactor of the code with adding helpers
Added safe_extract for zipfiles
Updated the test scenarios

(Please delete options that are not relevant)

• 🐛 Bug fix (non-breaking change which fixes an issue)
• 📄 This change requires a documentation update

Verification Process

To ensure the changes are working as expected:

• Test Location: tests/unit/api/http/files_test.py

Checklist:

• My code follows the style guidelines(PEP 8) of MindsDB.
• I have appropriately commented on my code, especially in complex areas.
• Relevant unit and integration tests are updated or added.

[martyna-mindsdb]

Hey @tino097
Thank you for contributing to MindsDB! Unfortunately, due to the fact that your PR was targeting the releases/25.11.1 branch, it was automatically closed when merging this release to main. Therefore, we need to request you to please recreate this PR and point it to the main branch.