crypto/tls: BenchmarkHandshakeServer failures

[gopherbot]

#!watchflakes
default <- pkg == "crypto/tls" && test == "BenchmarkHandshakeServer"

Issue created automatically to collect these failures.

Example (log):

=== RUN   BenchmarkHandshakeServer
BenchmarkHandshakeServer
--- FAIL: BenchmarkHandshakeServer

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "crypto/tls" && test == "BenchmarkHandshakeServer"

2024-06-21 19:12 gotip-darwin-amd64-race go@fed2c11d crypto/tls.BenchmarkHandshakeServer (log)

=== RUN   BenchmarkHandshakeServer
BenchmarkHandshakeServer
--- FAIL: BenchmarkHandshakeServer

— watchflakes

[cherrymui]

Dup of #68418