tests: fix some flaky tests - p2p, ledger, e2e-subs

[algorandskiy]

Summary

1. Fixed p2p tests race condition between data change and test assertions
2. fixed ledger tests data race as seen here
3. Fixed TestBoxAccountData with sleep: 40s -> 1.6s
4. Fixed round check in subs/absentee.py as seen here

Also removed a contraversal reflect check in MakeTxHandler introduced recent PR.

Test Plan

These are test fixes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 47.78%. Comparing base (172f19d) to head (2bda4fe).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6534      +/-   ##
==========================================
- Coverage   47.90%   47.78%   -0.12%     
==========================================
  Files         662      655       -7     
  Lines       87991    87903      -88     
==========================================
- Hits        42149    42003     -146     
- Misses      43085    43141      +56     
- Partials     2757     2759       +2     

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