Fix wildcard deduplication

[TheTechromancer]

Fixes #1859.

The problem was that the deduplication was happening before the event's data was changed to _wildcard. The solution was to make an additional dedup check after the data is changed.

[codecov]

Codecov Report

Attention: Patch coverage is 96.29630% with 1 line in your changes missing coverage. Please review.

Project coverage is 93%. Comparing base (a55e9dd) to head (0c5220e).
Report is 25 commits behind head on dev.

Files with missing lines	Patch %	Lines
bbot/modules/internal/dnsresolve.py	88%	1 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##             dev   #1972   +/-   ##
=====================================
- Coverage     93%     93%   -0%     
=====================================
  Files        365     365           
  Lines      27915   27941   +26     
=====================================
+ Hits       25739   25746    +7     
- Misses      2176    2195   +19     

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