chore: migration coercion fixes

[davidnixon]

What did you do?

While doing a migration build of one of our apps I found 2 issues.

• Some aria attributes require a strings "true" or "false" but were instead set to boolean true or false. This raised a warning in the vue migration build
  • Similarly, the aria-disabled attribute should be true or should be omitted. This raised a warning in the vue migration build.
  • https://v3-migration.vuejs.org/breaking-changes/attribute-coercion.html#overview
• I misunderstood the v-model change in Vue 3. I corrected that in cv-dropdown, cv-multiselect, and cv-search

Were docs updated if needed?

• Yes

[davidnixon]

@felipebritor could yo review this one before I merge it?

[felipebritor]

Sure, I'll check later tonight

[felipebritor]

Everything looks good, @davidnixon