Update tests for vuetify feature: textarea

[obitkin]

• [ ] autofocus (y/n)
• [ ] clear-icon (y/n)
• [ ] clearable (y/n)
• [ ] counter (number)
• [ ] theme (dark/light)
• [ ] dense (y/n)
• [ ] disabled (y/n)
• [ ] error (y/n)
• [ ] error-count (number)
• [ ] error-messages (string)
• [ ] flat (y/n)
• [ ] full-width (y/n)
• [ ] hide-details (y/n)
• [ ] hide-spin-buttons (y/n)
• [ ] hint (string)
• [ ] loader-height (number)
• [ ] loading (y/n)
• [ ] persistent-hint (y/n)
• [ ] persistent-placeholder (y/n)
• [ ] prefix (string)
• [ ] readonly (y/n)
• [ ] reverse (y/n)
• [ ] rounded (y/n)
• [ ] row-height (number)
• [ ] rules (func)
• [ ] shaped (y/n)
• [ ] single-line (y/n)
• [ ] solo (y/n)
• [ ] solo-inverted (y/n)
• [ ] success (y/n)
• [ ] success-messages (string)
• [ ] suffix (string)
• [ ] validate-on-blur (y/n)