platform(secrets): remove the use of enable_secret_scan_all_files for custom secrets

[lirshindalman]

'remove the use of enable_secret_scan_all_files for custom secrets

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my feature, policy, or fix is effective and works
• New and existing tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[gruebel]

🎄