fix(ci): Fix some flaky tests

[jbencin]

Description

Fix a couple flaky CI tests. The tests fixed are the ones that have been failingin recent PRs that couldn't be explained by problems with the PR itself. Relevant tests are described in linked issue. As far as I can tell, all tests seem to pass now

Applicable issues

• fixes Flaky tests #204

Additional info (benefits, drawbacks, caveats)

This PR may not fix all flaky tests, but it fixes the most common failures, so I'd like to get it merged and close this issue. If any more flaky tests are discovered, we should create a new issue for each test with relevant error logs, rather than trying to address them all in one issue/PR.

Checklist

• Test coverage for new or modified code paths
• Changelog is updated
• Required documentation changes (e.g., docs/rpc/openapi.yaml and rpc-endpoints.md for v2 endpoints, event-dispatcher.md for new events)
• New clarity functions have corresponding PR in clarity-benchmarking repo
• New integration test(s) added to bitcoin-tests.yml

[codecov-commenter]

Codecov Report

Merging #214 (85c6b71) into master (54c653c) will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##           master     #214   +/-   ##
=======================================
  Coverage   91.19%   91.19%           
=======================================
  Files           6        6           
  Lines         284      284           
=======================================
  Hits          259      259           
  Misses         25       25           

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[obycode]

lgtm!