Add default configuration to VueRouter compat

What does this MR do and why?

Add default configuration to VueRouter compat

Our tests utilize VueRouter without configuration in certain cases In Vue.js 3 this triggers warning about missing route for /

How to set up and validate locally

Run yarn jest --maxWorkers 6

Reference commit for before: 723a0da8

Failures	Before	After
Tests	4692	🎉 4425
Suites	838	🎉 831
Snapshots	241	🎉 240

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.