Fix detecting empty device IDs

[frenck]

Description

Fixes a regression from #606, which caused us no longer skip empty device IDs.

fixes #619

Motivation and Context

While empty device ID are, actually, not good. They are accepted by Home Assistant (and abused in Blueprints quite a bit). Therefore, skipping makes sense to prevent bunch of bug report 🙄

How has this been tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud