Fix several signs not resetting upon a craft being piloted

[galacticwarrior9]

Describe in detail what your pull request accomplishes

Ascend, Cruise, Descend, Speed and Status signs are supposed to be reset when their ship is piloted. However, this was broken as the loop that checks for them within a ship's hitbox would terminate upon encountering a single non-sign block. This is fixed by replacing the return that causes this with a continue, so the hitbox is fully checked.

Checklist

• [x] Unit tests
• [x] Proper internationalization
• [x] Compiled/tested