fix(xo-web/import/disk): can't change file name when importing from URL

[MelissaFrncJrg]

Description

Fixes [#7326]
We used to try to update the state directly by modifying the reference of the 'mapNames' object, so I tried creating a new copy with ' ... ' operator instead.

Checklist

• Commit

  • Title follows commit conventions
  • Reference the relevant issue (Fixes #007, See xoa-support#42, See https://...)
  • If bug fix, add Introduced by

• Changelog

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  • Update "Packages to release" in CHANGELOG.unreleased.md

• PR

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[fbeauchamp]

tested , it works well