Fix bug : Rectangle badge sticks out when using bordar Radius and gradient

[Umigishi-Aoi]

Description

Rectangle badge sticks out when using bordar Radius and gradient.

code

Badge(
  badgeContent: const Text('New'),
  child: const Icon(
    Icons.mail,
    color: Colors.black,
    size:50,
  ),
  gradient: const LinearGradient(colors:[ Colors.blue,Colors.red]),
  shape: BadgeShape.square,
  borderRadius: BorderRadius.circular(10),
  borderSide: const BorderSide(width: 3),
),

So, I fix it.

I added borderRadius in BoxDecoration in _badgeViewGradient() in lib/src/badge.dart.

After code modification

Please confirm this changes.

Thank you.

[Umigishi-Aoi]

Sorry,I didn't know that you are in Ukraine.

This pull request should be postponed.
Please live anyway.

I pray for your safety.

[yadaniyil]

Hey @Umigishi-Aoi. Thanks for your PR, it's really useful. Also, thanks for the caring, we will win!