UI field and editor improvements

[myieye]

• Our example semantic domains claimed they were predefined, but did not use predefined Guids. So, for some I picked predefined Guids from the canonical list and for others I marked them as not predefined, so we're testing both kinds. It's a bit weird, that our "predfined" SemDoms don't match their predfined names, but 🤷.
• I renamed the "hide" css classes to "unused", because that seemed slightly more appropriate now that it's not just a simple is-empty check. "Unused" wouldn't be bad in the UI either. But, Empty seems fine. I hope there wasn't a much easier way to keep track of whether the fields had ever had a value.
• Thought I had a smart trick to prevent page-width resizing when we hide overflow with a dialog open, but it was faulty. I left it in as a note.

Also hid the history button in the new-entry dialog:

Collapsing/hiding behaviour: (found a bit of a bug at the end, but it's non-trivial and non-critical 😆)

Example-Project-dev-2025-02-04-09-20-45-727.-.Google.Chrome.2025-02-04.10-41-29.mp4

Scrolling up behaviour:

Example-Project-dev-2025-02-04-09-20-45-727.-.Google.Chrome.2025-02-04.10-43-11.mp4

[github-actions]

UI unit Tests

12 tests  ±0   12 ✅ ±0   0s ⏱️ ±0s
 4 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 67717dd. ± Comparison against base commit 3dca3d1.

[github-actions]

C# Unit Tests

104 tests  ±0   104 ✅ ±0   5s ⏱️ ±0s
 16 suites ±0     0 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit 67717dd. ± Comparison against base commit 3dca3d1.

[hahn-kev]

let's merge it, we can try to make the makeHasHadValueTracker better later.

In your video you showed an example without any fields. Does that make sense? maybe each editor should have a primary field which never hides? So many exceptions.