What rule do you want to change?
vue/max-attributes-per-line

Does this change cause the rule to produce more or fewer warnings?
Yes

How will the change be implemented? (New option, new default behavior, etc.)?
A new option is preferable. Setting min to singleline or multiline

Please provide some example code that this change will affect:

<template>
 <div
 class="w-full"
 />
</template>

What does the rule currently do for this code?
It doesn't move class to single line.

What will the rule do after it's changed?

<template>
 <div class="w-full" />
</template>

Additional context

There's no need to cover this case, I believe because it is alread covered by vue/first-attribute-linebreak

<template>
 <div
 :class="{
 'w-full': someCondition,
 }"
 />
</template>