[deep link] Distinguish IosDomainError and AndroidDomainError.

[hangyujin]

Current domain errors are all Android, iOS domain errors are to be added.

issue: https://github.com/flutter/flutter/issues/149281

Pre-launch Checklist

• [ ] I read the Contributor Guide and followed the process outlined there for submitting PRs.
• [ ] I read the Tree Hygiene wiki page, which explains my responsibilities.
• [ ] I read the Flutter Style Guide recently, and have followed its advice.
• [ ] I signed the CLA.
• [ ] I listed at least one issue that this PR fixes in the description above.
• [ ] I updated/added relevant documentation (doc comments with ///).
• [ ] I added new tests to check the change I am making, or there is a reason for not adding tests.

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