Make Metatag inputs (settings) 100% width

Problem/Motivation

The inputs at
/admin/config/search/metatag/X
heavily use tokens, which typically may lead to very long texts in the inputs.

I think for UX reasons, it would make a lot of sense to give the inputs a width of 100% just like the textareas.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes