[WTF-2705]: Increase Transpilation Target

[weirdwater]

Checklist

• Contains unit tests ❌
• Contains breaking changes ❌
• Compatible with: MX 10, 11
• Did you update version and changelog? ✅
• PR title properly formatted ([XX-000]: description)? ✅

This PR contains

• Bug fix
• Feature
• Refactor
• Documentation
• Other (describe)

What is the purpose of this PR?

Increase the transpilation target of babel. There was a polyfill for object destructuring that caused collisions when multiple widgets using the language feature were loaded by the Mendix client.

Relevant changes

Removed specific targets for the Widget build configurations. This makes preset-env fall back on its defaults, which are more conservative than the compatibility we advertise in the Mendix documentation.

The build configuration for editorConfig was left at "safari 11", as it is evaluated by a runtime that only supports es5.

What should be covered while testing?

• Widgets using modern Javascript features should work in the client.
• Widget Previews using modern Javascript features whould work in the client.
• The use case described in Final bundled js has constants in global scope, causing conflict #176 should no longer produce errors.