fix: NWC use "encryption" tag to detect nip44 support

[frnandu]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.61%. Comparing base (f053c29) to head (68874d7).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...ackages/ndk/lib/domain_layer/usecases/nwc/nwc.dart	0.00%	3 Missing ⚠️
.../lib/domain_layer/usecases/nwc/nwc_connection.dart	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #324      +/-   ##
==========================================
- Coverage   70.83%   70.61%   -0.23%     
==========================================
  Files         136      136              
  Lines        5051     5054       +3     
==========================================
- Hits         3578     3569       -9     
- Misses       1473     1485      +12     

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