feat(preset-mini): Add support for peer and group variants on aria-* variants to Preset-Mini

[Johnkat-Mj]

This pull request enable the use of peer and group selectors in conjunction with ara-* variants ( #3691 )
This will provide the ability to achieve styles like:

• peer-aria-expanded:bg-red: Applies a red background to an element when its peer element has the aria-expanded attribute set to true.

• group-aria-expanded-p-4: Adds a padding of 4 units to elements within a group when a group member has the aria-expanded attribute set to true.

Example

<button data-accordion-trigger aria-label="toggle button"
    aria-expanded="true"
    class="... group" ...>
    Can it be animated?
    <span
        class=".... group-aria-expanded-rotate-180"></span>
</button>

In this example, the rotate-180 will be applied to the span element when the group member (button) has the aria-expanded attribute set to true.

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[zyyv]

@Johnkat-Mj Can you add some test cases?

[Johnkat-Mj]

@zyyv Can you guide me through this?
Should I just add a usage example in EXAMPLES or should I write a test for this?

[zyyv]

@zyyv Can you guide me through this? Should I just add a usage example in EXAMPLES or should I write a test for this?

Like this

unocss/test/assets/preset-mini-targets.ts

Lines 1176 to 1177 in 5ae78df

	// variants - aria
	'aria-[invalid=spelling]:underline-red-600',

Add your test cases, update the snapshot and check it right?