fix: don't watch disconnects if dropping peers after broadcast

[HashEngineering]

Issue being fixed or feature implemented

If we are dropping peers after sending, then don't watch disconnects to detect errors in transactions.

What was done?

How Has This Been Tested?

Breaking Changes

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have made corresponding changes to the documentation

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone

[codecov]

Codecov Report

Patch coverage: 33.33% and project coverage change: -0.02% ⚠️

Comparison is base (6422489) 47.08% compared to head (95bf5f8) 47.07%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #229      +/-   ##
============================================
- Coverage     47.08%   47.07%   -0.02%     
+ Complexity     6467     6462       -5     
============================================
  Files           408      408              
  Lines         45878    45879       +1     
  Branches       6481     6481              
============================================
- Hits          21603    21597       -6     
- Misses        21900    21902       +2     
- Partials       2375     2380       +5     

Files Changed	Coverage Δ
...n/java/org/bitcoinj/core/TransactionBroadcast.java	10.48% <33.33%> (-0.09%)	⬇️

... and 5 files with indirect coverage changes

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