Resolve "Changing the interface language in a builder application resets the element editing panel."

What is in this MR

The issue here was that the :key for the Tab loop was the label itself which is a translation. When the translation changes, the label changes which means that the key changes and therefore we trigger a re-render of all the labels that have changed. Style was a label that stayed the same when changing languages therefore the key stayed the same therefore no re-render for Style.

I suppose the lessons learned here is to never use a translation string as the key in a v-for since it can cause situations like these.

How to test this MR

• Create a new page
• Change the language to something else
• Watch how the tabs stay in the same order

Merge Request Checklist

• changelog.md has been updated if required.
• New/updated Premium/Enterprise features are separated correctly in the premium or enterprise folder
• The latest Chrome and Firefox have been used to test any new frontend features
• Documentation has been updated
• Quality Standards are met
• Performance: tables are still fast with 100k+ rows, 100+ field tables
• The redoc API pages have been updated for any REST API changes
• Our custom API docs are updated for changes to endpoints accessed via api tokens
• The UI/UX has been updated following UI Style Guide

Closes #1954 (closed)