feat: updating not found exception to give more information

[bswhite1]

Description

The standard exception was not very helpful. I could tell a file wasn't found, but no indication of why or what file. This uses the platformException.message that has the actual file path, and returns it to the user.

Checklist

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• [X] I read the Contributor Guide and followed the process outlined there for submitting PRs.
• [x] My PR includes unit or integration tests for all changed/updated/fixed behaviors (See Contributor Guide).
• [X] All existing and new tests are passing.
• [X] I updated/added relevant documentation (doc comments with ///).
• [X] The analyzer (melos run analyze) does not report any problems on my PR.
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Breaking Change

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• [ ] Yes, this is a breaking change.
• [X] No, this is not a breaking change.