Process LoRa Message only if comming from a device and can be deserialized

[kbeaugrand]

Description

What's new?

• Fix error in logs when trying to deserialize an event that is not coming from a LoRa device.

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Tests
• Other

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01 🎉

Comparison is base (932822a) 91.56% compared to head (a8ff7a6) 91.58%.

❗ Current head a8ff7a6 differs from pull request most recent head 1b99e6e. Consider uploading reports for the commit 1b99e6e to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1891      +/-   ##
==========================================
+ Coverage   91.56%   91.58%   +0.01%     
==========================================
  Files         276      277       +1     
  Lines        9045     9062      +17     
==========================================
+ Hits         8282     8299      +17     
  Misses        763      763              

Impacted Files	Coverage Δ
...THub.Portal.Infrastructure/ConnectionAuthMethod.cs	100.00% <100.00%> (ø)
...Hub.Portal.Server/Services/LoRaWanDeviceService.cs	100.00% <100.00%> (ø)

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