Add no swatches story

Author: bjarnef

packages/uui-color-picker/lib/uui-color-picker.story.ts

@@ -83,3 +83,9 @@ export const Readonly: Story = {
     readonly: true,
   },
 };
+
+export const NoSwatches: Story = {
+  args: {
+    swatches: [],
+  },
+};

packages/uui-color-swatches/lib/uui-color-swatches.story.ts

@@ -122,3 +122,9 @@ export const Gradient: Story = {
     value: 'lemon-twist',
   },
 };
+
+export const NoSwatches: Story = {
+  args: {
+    swatches: [],
+  },
+};