Description of changes:

Rename core::assert in Kani's std crate to work around the case of having an extern crate std as core line in the user crate, which results in making Kani's definition of the assert and panic macros (which both use core::assert) self-referential.

Resolved issues:

Resolves #1949

Related RFC:

Optional #ISSUE-NUMBER.

Call-outs:

Testing:

• How is this change tested? Added a new test

• Is this a refactor change? No

Checklist

• Each commit message has a non-empty body, explaining why the change was made
• Methods or procedures are documented
• Regression or unit tests are included, or existing tests cover the modified code
• My PR is restricted to a single feature or bugfix

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 and MIT licenses.