fixed shape at non-100% viewport zoon to apply scale correctly

[krVatsal]

Fixes #2582
When drawing shapes (Rectangle, Ellipse, Circle, Polygon, Star, Arc, Spiral) at a viewport zoom other than 100%, the Transform node would receive a scale value corresponding to the zoom level instead of 1.

The fix converts viewport-space dimensions to document-space before setting shape parameters and uses TransformIn::Local instead of TransformIn::Viewport . This matches how the Line tool already worked correctly.

[Keavon]

• This is seemingly not working for Ellipse.
• We get a crash when drawing a Spiral.

[krVatsal]

• We get a crash when drawing a Spiral.
  Hey, can you explain a bit what do you mean by crash, like it works fine on my localhost for spiral.

[krVatsal]

After analyzing the test failures, I realized that ellipse is intentionally designed to work in viewport space (visual/screen space), not document space(which was my solution for this scale issue). This is correct behavior for canvas rotation scenarios. The zoom-related fix likely only applies to shapes like Rectangle that use document space ([TransformIn::Local]), which I already fixed in my previous fix.

If there is something that i am getting wrong or if i should follow any other method please suggest.
@Keavon

[Keavon]

Ellipse should work the same as Rectangle in that regard.