[Bug]: Translation files with same name not working

[hanzlamateen]

When there are multiple translation files with same name i.e.

packages/client-core/i18n/en/user.json and packages/projects/projects/XREngine-development-test-suite/i18n/en/user.json

Then the keys in XREngine-development-test-suite's user.json does not work.

This could be possibly due to initializei18n method in client/src/util.ts not handling merge for same filenames.