SkinToneSelector doesnt close if not selected

[Asquare17]

Step to reproduce

• Select the skin tone option
• Select an emoji
• Skin tone remains on screen even if you pop off the page.

[kishankumawat03]

same here.
only open skin tone modal and close bottomSheet by tapping outside.

[kishankumawat03]

change code in skin_tone_selector.dart

return OverlayEntry(
builder: (context) => GestureDetector(
onTap: () {
_overlayEntry.remove();
setState(() {
_expanded = false;
});
},
child: Stack(
children: [
Container(
color: Colors.transparent,
constraints: const BoxConstraints.expand(),
),
Positioned(
left: offset.dx - w + size.width,
top: offset.dy - size.height,
width: w,
height: size.height,
child: Material(
elevation: 4.0,
child: Row(
children: dots,
),
),
),
],
),
),
);