[Bug] Added i18n test files to build app

[mdeandrea-mrmilu]

Environment

Package version: 3.0.0 Platform: Web, but probably happens with all platforms Device information: N/A

Description

Expected behavior: When build a app, remove files from i18n

Current behavior: When build a app, is added files from i18 folder

Steps to reproduce

1. Add easy_localization
2. Build app
3. Bug: See build folder and there search by assets/packages/easy_localization/i18n

Images

[yegor-pelykh]

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