Prepare async migration to add ID to index on pipeline

This is done to improve performance in the CommitController.

db/post_migrate/20250127184534_schedule_index_ci_pipelines_on_project_id_and_sha_and_id.rb

+# frozen_string_literal: true
+
+class ScheduleIndexCiPipelinesOnProjectIdAndShaAndId < Gitlab::Database::Migration[2.2]
+  milestone '17.9'
+  disable_ddl_transaction!
+
+  TABLE_NAME = :ci_pipelines
+  COLUMN_NAMES = [:project_id, :sha, :id]
+  INDEX_NAME = 'ci_pipelines_on_project_id_and_sha_and_id'
+
+  # TODO: Index to be created synchronously in https://gitlab.com/gitlab-org/gitlab/-/issues/516073
+  def up
+    prepare_async_index(TABLE_NAME, COLUMN_NAMES, name: INDEX_NAME)
+  end
+
+  def down
+    unprepare_async_index(TABLE_NAME, COLUMN_NAMES, name: INDEX_NAME)
+  end
+end

db/schema_migrations/20250127184534

+ab8ee7d18e100a78130cad7d073316497d623ff6005ee38a3bdc549664b9e7b4
\ No newline at end of file