Unable to correct a short invalid alias on a property

[JasonElkin]

Which Umbraco version are you using? (Please write the exact version, example: 10.1.0)

v13.1.0

Bug summary

Issue is based on this PR by @richarth.

Original PR description:

---

When adding a new property with a short name such as A, an invalid alias will be created.

If you then correct just the alias you won't be able to save your new property. I've added a Playwright test which demos this.

You can get around this by changing the name and the alias but it isn't immediately obvious, as the error on the name isn't flagged.

I've also added a screen recording of the problem below.

e30ffb11-6344-427a-b6f3-a62a4e0b7ab1.mp4

Steps to reproduce

1. Add a property and give it a single character alias (e.g. "a")
2. Try and save the property, it fails.
3. Make property alias longer
4. Try and save the property, it still fails.

Expected result / actual result

Property editor can be saved after the alias is made longer.

[github-actions]

Hi there @JasonElkin!

Firstly, a big thank you for raising this issue. Every piece of feedback we receive helps us to make Umbraco better.

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[github-actions]

Hi @JasonElkin,

We're writing to let you know that we would love some help with this issue. We feel that this issue is ideal to flag for a community member to work on it. Once flagged here, folk looking for issues to work on will know to look at yours. Of course, please feel free work on this yourself ;-). If there are any changes to this status, we'll be sure to let you know.

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