Implement early mock of the Vue.js 3 to configure compat

Related issue: #390830 (closed)

What does this MR do and why?

In order to avoid extra console.warn about deprecations we run configureCompat during test setup setting suppress-warning thing. However imports are evaluated earlier than than, so when certain imports (like ~/alert) invoke Vue during initialization, we have extra warning about GLOBAL_EXTEND being deprecated

In order to workaround this we mock vue doing very simple thing - running configureCompat on any import

Screenshots or screen recordings

N/A

How to set up and validate locally

VUE_VERSION=3 yarn jest spec/frontend/work_items/components/work_item_links/work_item_link_child_spec.js

• ❌ On master should fail complaining about GLOBAL_EXTEND being deprecated
• ⚠ on this branch should fail due to setting children prop on stub (addressed in Add proper handling for props in Vue.js 3 stubs (!125733 - merged))

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