feat(core): align GitHub metadata handling with other backends (#3316)

* Revert "Revert "feat(core): Align GitHub metadata handling with other backends (#3292)""

This reverts commit 5bdd3df9ccbb5149c22d79987ebdcd6cab4b261f.

* fix(backend-github): fix migration code

* test(backend-github): fix test

* test(e2e): shorten wait time

* test(e2e): try and fix test on CI

cypress/integration/common/spec_utils.js

@@ -50,3 +50,10 @@ export const afterEach = (taskResult, backend) => {
     Cypress.runner.stop();
   }
 };
+
+export const seedRepo = (taskResult, backend) => {
+  cy.task('seedRepo', {
+    backend,
+    ...taskResult.data,
+  });
+};