Improve intproxy tracing #14448

Job	Run time
check_if_release_branch	1s
towncrier_check	7s
changed_files	6s
build mirrord CLI	0s
test_agent	1m 18s
lint	1m 29s
check-rust-docs	1m 3s
integration_tests	1m 22s
lint_markdown	0s
macos_tests	1m 14s
test_agent_image	23s
test_cli_image	1m 30s
e2e (docker)	1m 1s
e2e (containerd)	1m 1s
vscode_e2e_on_release_branch	0s
intellij_e2e_on_release_branch	0s
ci	1s
	10m 36s

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