[type: list] with multiple text fields loses input focus on every keypress

[volocyuha]

Description:

When editing a type: list blueprint field that contains two or more type: text subfields, the active input loses focus after every single keypress. This makes it impossible to type more than one character at a time or select text within the field.

Steps to reproduce:

1. Create a page blueprint with a type: list field containing two or more type: text subfields (e.g. .label and .content)
2. Open that page in the Admin panel
3. Click on any text input inside a list item
4. Type any character

Expected behavior: Input stays focused, user can type normally.
Actual behavior: Input loses focus after each keypress. User must re-click the field for every character. Text selection is also impossible.

Notes:

• The issue affects ALL type: list fields with multiple subfields across different pages and tabs
• Lists with a single .value subfield (type: select) work correctly
• Simple type: text fields outside of lists work correctly
• Root cause appears to be Vue re-rendering the entire list component on each input event, causing the focused element to unmount and remount

Environment:
Grav: 2.0.0-beta.1
Admin plugin: 2.0.0-beta.12
Browser: Mozilla Firefox 150.0 (64-bit)
OS: Windows 11