Fix vite build issue with import from accounting-js

[derickdsouza]

This PR fixes a vite build issue: vite build fails while trying to optimise its dependencies because accounting-js does not export default. Using named exports fixes the issue and allows vite to optimise vue-numeric.

[kevinongko]

Hi thanks for the PR, could you fix the merge conflict?

[alcoheca]

This good to go in now? Just came up against this after migrating to Vite

[eeedvisss]

@kevinongko Could we merge this in? Looks like its good to go. As this issue is blocking the package usage with vite.

[kevinongko]

@eeedvisss updated, cheers