Fix CB discarding changes if pressed Ctrl + Enter too quickly

[farmaazon]

Pull Request Description

Now, quick typing in component browser and pressing "enter" should not cut off the last part typed. Fixes #6733

ugi-bugi-2023-05-29_15.00.35.mp4

On this occasion, also fixed "go-to-dashboard" button and "Unsupported engine version" being over the full-screen visualization. Fixes #6722

Important Notes

I did a significant refactoring of Project View:

1. The huge frp::extend block was split into multiple init methods.
2. Remaining of the "Old searcher" were removed.
3. The "Edited" event from node's input is emitted only when in edit mode (it's consistent with other API terminology, and makes FRP for showing CB much simpler.

The code was mostly moved around, but the check is advised anyway, as there were small changes here and there.

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• The documentation has been updated, if necessary.
• Screenshots/screencasts have been attached, if there are any visual changes. For interactive or animated visual changes, a screencast is preferred.
• All code follows the
  Scala,
  Java,
  and
  Rust
  style guides. In case you are using a language not listed above, follow the Rust style guide.
• All code has been tested:
  • Unit tests have been written where possible.
  • If GUI codebase was changed, the GUI was tested when built using ./run ide build.

[Frizi]

QA report: 🔴

1. When entering edit mode on a node containing a type constructor, the component browser incorrectly selects the type itself as an option. Pressing enter then enters into that type, and confirming it again results in an arbitrary other method (not constructor in this case) being selected.

cb-double-confirm.mp4

2. When selecting a type suggestion, component browser immediately switches selection to a different entry.

cb-type-select.mp4

[farmaazon]

1. It's on develop, but I have a quickfix and try to add it here.
2. It's also on develop. It was partially worked around recently, so after last merge you should not have a problem in this specific scenario. The full fix is tracked by Cursor keys when editing a node move both the caret position and the selected item in the Component Browser #6124

[farmaazon]

@Frizi fix landed, please check out.

[Frizi]

QA Status: 🍌

Ctrl+enter works correctly, It will always accept currently written input. The issues mentioned above are now fixed.

There is still an issue related to input lag when simply using enter, as the component browser takes a while to respond to the input, and the accepted suggestion is effectively outdated at the time of key press. I'm going to say it is a separate issue, and likely needs further general performance improvements to be adressed properly. Here is how it looks though:

cb-quick-type.mp4