Missing spanish accents in VIM on Weston-Terminal

Hi there,

Using the latest GIT Weston code, spanish accents work fine on the Weston-Terminal. No problem at all.

However, I noticed that spanish accents are missing on the VIM editor inside Weston-Terminal. They are also missing on NANO.

Other Wayland terminal emulators, such as Foot, don't have this problem.

The fact that accents work on Weston-Terminal but not on text editors inside Weston-Terminal sounds like a Weston-Terminal bug to me.