Validate not null constraint on projects.project_namespace_id column

We have prepare async check constraint in
a160dcda.

Changelog: other

db/post_migrate/20250306093201_validate_project_namespace_id_null_constraint.rb

+# frozen_string_literal: true
+
+class ValidateProjectNamespaceIdNullConstraint < Gitlab::Database::Migration[2.2]
+  milestone '17.10'
+
+  def up
+    validate_not_null_constraint :projects, :project_namespace_id
+  end
+
+  def down
+    # no-op
+  end
+end

db/schema_migrations/20250306093201

+4b6d59e21058ca28b551da5aab555d4dc362b8faa06482a2f036698a4ccc1163
\ No newline at end of file

db/structure.sql

@@ -297,7 +297,8 @@ CREATE TABLE projects (
     project_namespace_id bigint,
     hidden boolean DEFAULT false NOT NULL,
     organization_id bigint,
-    CONSTRAINT check_1a6f946a8a CHECK ((organization_id IS NOT NULL))
+    CONSTRAINT check_1a6f946a8a CHECK ((organization_id IS NOT NULL)),
+    CONSTRAINT check_fa75869cb1 CHECK ((project_namespace_id IS NOT NULL))
 );
 CREATE FUNCTION find_projects_by_id(projects_id bigint) RETURNS projects
@@ -27479,9 +27480,6 @@ ALTER TABLE sprints
 ALTER TABLE web_hook_logs
     ADD CONSTRAINT check_df72cb58f5 CHECK ((char_length(url_hash) <= 44)) NOT VALID;
-ALTER TABLE projects
-    ADD CONSTRAINT check_fa75869cb1 CHECK ((project_namespace_id IS NOT NULL)) NOT VALID;
-
 ALTER TABLE ONLY ci_build_needs
     ADD CONSTRAINT ci_build_needs_pkey PRIMARY KEY (id);