Fix Issue 18828 - [-betterC] helpless error in object.d

[JinShil]

This won't pass tests without dlang/druntime#2178

[dlang-bot]

Thanks for your pull request, @JinShil!

Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	18828	blocker	[-betterC] helpless error in object.d

⚠️⚠️⚠️ Warnings ⚠️⚠️⚠️

• Regression or critical bug fixes should always target the stable branch. Learn more about rebasing to stable or the D release process.

To target stable perform these two steps:

1. Rebase your branch to upstream/stable:

git rebase --onto upstream/stable upstream/master

2. Change the base branch of your PR to stable

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub fetch digger
dub run digger -- build "master + dmd#8235"

[JinShil]

Test was added to druntime PR.