Add some logging to help identify bug where sending input does nothing #5444

Job	Run time
build-and-check	2m 29s
test-integration-.agents	41s
test-integration-common	41s
test-integration-packages/internal	43s
test-integration-packages/agent-runtime	48s
test-integration-cli	47s
test-packages/agent-runtime	1m 4s
test-packages/billing	39s
test-integration-web	45s
test-web	43s
test-.agents	39s
test-integration-packages/billing	45s
test-cli	1m 18s
test-common	46s
test-packages/internal	46s
test-integration-sdk	42s
test-sdk	51s
	15m 7s

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