Fix Issue 22801 - [master] Can't return address of return ref parameter from constructor

[dkorpel]

Same as #13699, but targeting master. It seems like this depends on the return-ref-scope ambiguity fixes that aren't in stable yet.

[dlang-bot]

Thanks for your pull request and interest in making D better, @dkorpel! We are looking forward to reviewing it, and you should be hearing from a maintainer soon.
Please verify that your PR follows this checklist:

• My PR is fully covered with tests (you can see the coverage diff by visiting the details link of the codecov check)
• My PR is as minimal as possible (smaller, focused PRs are easier to review than big ones)
• I have provided a detailed rationale explaining my changes
• New or modified functions have Ddoc comments (with Params: and Returns:)

Please see CONTRIBUTING.md for more information.

---

If you have addressed all reviews or aren't sure how to proceed, don't hesitate to ping us with a simple comment.

Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	22801	regression	[REG 2.099.0-beta.1] Can't return address of return ref parameter from constructor

⚠️⚠️⚠️ 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 run digger -- build "master + dmd#13940"

[dkorpel]

@RazvanN7 I think it's okay to merge this into master:

• it's not really a regression, escape analysis was never done when assigning the address of a ref parameter to this, so allowing it before was a hole
• dip1000 is still behind a preview switch
• it depends on other dip1000 fixes which are in master