MDCMigration: 2 dialog style changes #10933

Job	Run time
lint-misc	14s
lint-frontend	1m 49s
lint-python-flake8 (3.9)	26s
build-data-server-pip (native, ubuntu-22.04, 1.65.0)	2m 2s
lint-python-flake8 (3.10)	19s
lint-python-yaml-docs	36s
build-data-server-pip (native, macos-12, 1.65.0)	3m 10s
lint-python-flake8 (3.11)	16s
lint-rust (1.65.0, 0.16.1)	47s
build-data-server-pip (universal, ubuntu-22.04, 1.65.0)	13s
build (tf, 3.9)	1h 8m 56s
build (notf, 3.9)	1h 5m 36s
	2h 24m 24s

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