What rule do you want to change? attribute-hyphenation

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

How will the change be implemented? (New option, new default behavior, etc.)? New default behavior

Please provide some example code that this change will affect:

<my-component
    v-model:selectedItem="..."
   defaultValue="..."
/>

What does the rule currently do for this code? It flags that the defaultValue prop is not hyphenated (should be default-value), but it does not flag the selectedItem prop.

What will the rule do after it's changed? In addition to complaining that defaultValue should be hyphenated (default-value), it will also complain that selectedItem should be hyphenated (v-model:selected-item)

Additional context
If prop names should be hyphenated, then they should always be hyphenated, even when used with v-model.