Prevent using localization API before initialization

[markusguenther]

Description

It could happen that the window.NeosCMS.I18n.translate has been used before the initialization flag was set.

Steps to Reproduce

1. Change Backend Language to German, for instance
2. Check the Restore button text or impersonate text

Expected behavior

Text should be german

Actual behavior

It is English, as it is a fallback.

Same Issue is solved for Neos 8.0
neos/neos-development-collection#4454

[github-actions]

🎉 This issue has been resolved in version 3.0.2 🎉

The release is available on GitHub release

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