atlas/migration: `protected_flows` configurations for migrate down #654

Job	Run time
Build provider bundles	2m 7s
Lint	24s
Acceptance Tests (Terraform 1.5.*)	1m 39s
Acceptance Tests (Terraform 1.6.*)	1m 39s
Acceptance Tests (Terraform 1.7.*)	2m 3s
Integration MySQL (Terraform 1.5.*)	40s
Integration PostgreSQL (Terraform 1.5.*)	36s
Integration MySQL (Terraform 1.6.*)	41s
Integration SQL Server (Terraform 1.5.*)	40s
Integration PostgreSQL (Terraform 1.6.*)	40s
Integration SQLite (Terraform 1.5.*)	14s
Integration SQL Server (Terraform 1.6.*)	42s
Integration MySQL (Terraform 1.7.*)	37s
Integration SQL Server (Terraform 1.7.*)	43s
Integration PostgreSQL (Terraform 1.7.*)	33s
Integration SQLite (Terraform 1.6.*)	11s
Integration SQLite (Terraform 1.7.*)	18s
	14m 27s

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