Fix declaration-block-no-redundant-longhand-properties autofix for border

[Mouvedia]

What minimal example or steps are needed to reproduce the bug?

a {
	border-width: 7px;
	border-style: double;
	border-color: green;
}

What minimal configuration is needed to reproduce the bug?

{
  "rules": {
    "declaration-block-no-redundant-longhand-properties": true
  },
  "fix": true
}

How did you run Stylelint?

https://stylelint.io/demo

What did you expect to happen?

a {
	border: 7px double green;
}

Do you have a proposal to fix the bug?

add a custom resolver for border

[ybiquitous]

@Mouvedia Thanks for the bug report. Great catch. 👍🏼

[Mouvedia]

Great catch.

Thanks.
I didn't go into details about the fix but it requires to not attempt it if the sub property longhands have more than 1 value.
The implementation will be easy but it will require many tests covering many permutations. My first attempt at fixing it was naive and foolish.