Fixed no forward movement on main level

[CesiumBen]

Summary

A rather misleading bug, turns out that the collisions are enabled on the line trace mesh cylinders that are anchored to the hands. The resulting collisions on the forward moving capsule collider of the pawn, and the line trace objects restricted the user from moving forward since you typically hold your hands out in front of you.

Author checklist

• Fix for #25
• Has the new tutorial been integrated into the main level? N/A
• Has a new section of the readme been added for this tutorial? N/A
• Have you done a full self-review of the code and blueprints? Yes
• Have you tagged a primary reviewer? Yes
• Are there any remaining tasks to do or blocking questions to answer before we can merge this? No

Testing plan

• In the main level you should be able to move forward
• Also verify that the movement speed isn't too high, I increased the altitude interpolation and speed accordingly, so the speed continues to increase at higher altitudes.

Reminders for reviewers

Thank you for taking the time to review this PR. By approving a PR you are taking as much responsibility for these changes as the author. Please keep these points in mind throughout the review process:

• Review and run all parts of the test plan on this branch and verify it matches expectations.
• Review the code and make sure you do not have any remaining questions or concerns. You should understand why this code change fixes the issue and agree that it's the best approach to doing so.
• Review the automated tests and make sure there are no missing tests or edge cases.
• When you feel this is ready bump it to a second reviewer or merge.

[xuelongmu]

Thanks @CesiumBen! When testing, I felt that the speed was a bit fast right now and could be prone to inducing nausea. I think we can wait until the vignette gets implemented to further fine-tune the speed, as that will help mitigate the effects.