fix(ArcLabel): Support rotation in Canvas mode

Author: techniq

.changeset/fix-arclabel-canvas-rotation.md

@@ -0,0 +1,7 @@
+---
+'layerchart': patch
+---
+
+fix(ArcLabel): Support rotation in Canvas mode
+
+Changed `centroid-rotated` and `centroid-radial` placements to pass `rotate` prop instead of SVG `transform` string to `Text`, enabling rotation in Canvas rendering.

packages/layerchart/src/lib/components/ArcLabel.svelte

@@ -222,7 +222,7 @@
           y: offsetCentroid[1],
           textAnchor: 'middle' as const,
           verticalAnchor: 'middle' as const,
-          transform: `rotate(${centroidRotation}, ${offsetCentroid[0]}, ${offsetCentroid[1]})`,
+          rotate: centroidRotation,
         };
       }
       return getArcTextProps?.('centroid', { startOffset, outerPadding }) ?? {};