fix(ui_localizations): Update Arabic language.

[l3op]

Description

Update the Arabic language.

Related Issues

None.

Checklist

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• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• My PR includes unit or integration tests for all changed/updated/fixed behaviors (See Contributor Guide).
• All existing and new tests are passing.
• I updated/added relevant documentation (doc comments with ///).
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• All unit tests pass (melos run test:unit:all doesn't fail).
• I read and followed the Flutter Style Guide.
• I signed the CLA.
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Breaking Change

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• Yes, this is a breaking change.
• No, this is not a breaking change.

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