Move new test into existing `dynamic-io` test app #12898

Job	Run time
build-wasm (web)	21s
build-wasm (nodejs)	24s
build	2m 14s
deploy-target	8s
stable - x86_64-unknown-linux-gnu - node@16	41s
Upload Turbopack Bytesize metrics to Datadog	0s
Deploy preview tarball	1m 53s
Deploy examples	0s
Potentially publish release	0s
Release Stats	0s
	5m 41s

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