fix: denote GetWasmMemoryLimitFailed error source

[ericswanson-dfinity]

Description

This makes the error source consistent with other errors

How Has This Been Tested?

Not specifically tested

Checklist:

• [x] The title of this PR complies with Conventional Commits.
• [ ] I have edited the CHANGELOG accordingly.
• [ ] I have made corresponding changes to the documentation.