The tests on migration tests failed but CI reports successfully
https://github.com/go-gitea/gitea/actions/runs/7364373807/job/20044685969#step:8:141
This PR will fix the bug on migration v283 and also the CI hidden
behaviour.
The reason is on the Makefile
`GITEA_ROOT="$(CURDIR)" GITEA_CONF=tests/mysql.ini $(GO) test
$(GOTESTFLAGS) -tags='$(TEST_TAGS)' $(MIGRATE_TEST_PACKAGES)` will
return the error exit code.
But
`for pkg in $(shell $(GO) list
code.gitea.io/gitea/models/migrations/...); do \
GITEA_ROOT="$(CURDIR)" GITEA_CONF=tests/mysql.ini $(GO) test
$(GOTESTFLAGS) -tags '$(TEST_TAGS)' $$pkg; \
done`
will not work.
This also fix#29602
