f/shells: changed video input event to `blur`.
f/shells: changed video input event to `blur`.

This changes a VideoLinkShell.EditView capture event for input fields from
'keyup input' to `blur input`. This is to avoid weird -- annoying -- behavior
while editing.

Addresses: https://github.com/athenalabs/acorn/commit/1f700c6ddcf3fb23bb389d68ec369496b2c71f1c#commitcomment-1707038

athenalabs/acorn-player