transform.position doesn't follow default_float_step (limited to 3 decimal places)

[Zshandi]

Tested versions

• Reproducible in: v4.3.stable.official [77dcf97], v4.0.stable.official [92bee43]
• Not Reproducible in: v3.6.stable.official [de2f0f1]

System information

Windows 10 - Godot v4.3.stable.official [77dcf97]

Issue description

The transform.position vector x and y values for Node2D and Node3D have a fixed 3 decimal point precision, rather than following the interface/inspector/default_float_step value as they should. This is very limiting, and doesn't match the behavior of the scale value. Though this is related to #18251, it's not the same, as most of the problems described in that issue were resolved by adding interface/inspector/default_float_step, which the transform.position originally followed.

Upon initial investigation, it seems to have been caused by PR #57144, which was to fix a different issue where one was unable to click and drag to change the position values. It seems that the best solution would be to modify the ADD_PROPERTY lines for position to simply omit the step value, which will indicate that it should use the interface/inspector/default_float_step value rather than the current hardcoded 0.001 value.

Steps to reproduce

1. In the editor settings set the interface/inspector/default_float_step value to something more precise than 3 decimal points, for example 0.0000001
2. Add or edit a Node2D (or any subclass)
3. Attempt to set a Position with more than 3 decimal places (for example 0.111111), then hit enter
4. Result: the value gets rounded to 3 decimal places (for example 0.111)

Note that the scale value works properly in 4.3 (though it didn't work properly in 4.0)

Minimal reproduction project (MRP)

N/A