Flakiness in TestTransportMultiplexAcceptNonBlocking

[staheri14]

Problem

There is flakiness in TestTransportMultiplexAcceptNonBlocking (link) in the main branch.
A sample log for the failure of this in CIs can be found in this link. This is while the same test passes in a local run as well when re-running the job in CI (see this).

--- FAIL: TestTransportMultiplexAcceptNonBlocking (0.04s)
    transport_test.go:350: auth failure: conn.ID (dc5c308702271809cba742299043b03412c02bec) NodeInfo.ID (29095178cc7b29bbd4ae2c94790cf35981ea60ff) mismatch
FAIL
coverage: 67.7% of statements
FAIL	github.com/cometbft/cometbft/p2p	9.544s
ok  	github.com/cometbft/cometbft/p2p/conn	12.[194](https://github.com/celestiaorg/celestia-core/actions/runs/10149954989/job/28066004736?pr=1430#step:6:195)s	coverage: 89.4% of statements
ok  	github.com/cometbft/cometbft/p2p/pex	16.171s	coverage: 77.5% of statements
ok  	github.com/cometbft/cometbft/p2p/trust	1.041s	coverage: 87.1% of statements
FAIL
Error: Process completed with exit code 123.

Acceptance Criteria

• Determining the root of flakiness and fixing it.