Fix/46499/mobile discover imported check

[jdurand-teclib]

• I have performed a self-review of my code.
• I have added tests (when available) that prove my fix is effective or that my feature works.
• I have updated the CHANGELOG with a short functional description of the fix or new feature.
• This change requires a documentation update.

Description

• It fixes !46499
• Here is a brief description of what this PR does
  • Prevent mobile devices duplication in database during discovery and importing phases. The compared values were 2 different fields.

[stonebuzz]

LGTM (can validate with customers?)

[jdurand-teclib]

Customer confirmed fix is efficient, I think we can merge