Path: Fix radius type inconsistency, issue #6170 [Bug]

Make `self.radius` a float type throughout since other methods and functions treat it as such.

src/Mod/Path/PathScripts/PathDressupHoldingTags.py

@@ -134,11 +134,10 @@ class Tag:
         self.height = math.fabs(height)
         self.actualHeight = self.height
         self.angle = math.fabs(angle)
-        self.radius = (
-            radius
-            if FreeCAD.Units.Quantity == type(radius)
-            else FreeCAD.Units.Quantity(radius, FreeCAD.Units.Length)
-        )
+        if hasattr(radius, "Value"):
+            self.radius = radius.Value
+        else:
+            self.radius = FreeCAD.Units.Quantity(radius, FreeCAD.Units.Length).Value
         self.enabled = enabled
         self.isSquare = False
 
@@ -209,7 +208,7 @@ class Tag:
         self.solid.translate(orig)
         radius = min(self.radius, radius)
         self.realRadius = radius
-        if not PathGeom.isRoughly(0, radius.Value):
+        if not PathGeom.isRoughly(0, radius):
             PathLog.debug("makeFillet(%.4f)" % radius)
             self.solid = self.solid.makeFillet(radius, [self.solid.Edges[0]])