Cleanup renderer before process.exit #5274

Job	Run time
build-and-check	2m 37s
test-packages/internal	46s
test-.agents	38s
test-packages/billing	43s
test-web	48s
test-cli	1m 10s
test-common	39s
test-packages/agent-runtime	54s
test-sdk	43s
test-integration-packages/internal	39s
test-integration-.agents	44s
test-integration-common	46s
test-integration-cli	45s
test-integration-packages/billing	34s
test-integration-packages/agent-runtime	41s
test-integration-sdk	41s
test-integration-web	40s
	14m 28s

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