Cannot Create a New Project if Windows Username Contains a Special Character

If you have a windows username with a special character (in this case, it was ^), the launcher will not allow you to create a new project, and a warning appears indicating that the path cannot contain a special character.

Found in 4.10 Preview 2 CL 2733139. Reproduced in 4.9.2 binary and Main CL 2740839.

1. Create a new local windows account ([Link Removed]) Ensure that the account name has a special character.
2. Log into the new account
3. Open the editor
4. Attempt to create a new project

Result: Path name may not contain a special character error appears.

Expected: The project would create successfully.