Make the primitive shape tools avoid setting a negative transform scale (#1973)

* Fix transformation for primitive tools, make odd-sided polygons and stars flipped with radius instead of scale

* Extract to function and add comment

* Code review

---------

Co-authored-by: hypercube <0hypercube@gmail.com>
Co-authored-by: Keavon Chambers <keavon@keavon.com>

node-graph/graph-craft/src/document/value.rs

@@ -194,6 +194,13 @@ impl TaggedValue {
 			_ => panic!("Cannot convert to primitive string"),
 		}
 	}
+
+	pub fn to_u32(&self) -> u32 {
+		match self {
+			TaggedValue::U32(x) => *x,
+			_ => panic!("Passed value is not of type u32"),
+		}
+	}
 }
 
 impl Display for TaggedValue {