Make Goto line a Popup and column input

[kitbdev]

• originally a part of Overhaul multicaret editing and selection in TextEdit #86978
• Edit: should be merged after Fix goto line issues in code editor #94002

Changes Goto Line Dialog to be a popup, since it should be transient. Clicking outside will close it.
Allows inputting column after the line, after a :. This is actually the character position, so tabs count as 1 and not 4. It also starts at 1, like the line number. If the column number is too high or too low, it will be clamped to the line length.

Live navigation, the editor will move to the line immediately without needing to confirm.
Pressing Enter closes the popup. Even if there is no number.
Pressing Esc closes and returns to the original position (using navigation state).
The default popup position is at the top center of the TextEditor it is on.

Fixes Goto line not deselecting.
Goto Line now centers to the line and sets the caret column to 0.

[KoBeWi]

Using EditorSpinSlider won't allow inputting columns (e.g. 100:20) if we ever want to support that.

[kitbdev]

Yeah, I think column support is probably more important than expression support here.
The EditorSpinSlider isn't the best fit anyway, since it starts focused and the buttons on it are only available after unfocusing it with tab.
It would also be nice to have live changes.
I'll make some changes.

[kitbdev]

Updated

• allows column number input.
• goes to line immediately (can cancel to return).
• no longer supports expressions.