Fix bot CTG navigation stuttering during breakaway run

[sunzenshen]

Description

The movements of the ghost carrier and their escorts would stutter if they were closer to the capture point than any enemy. The root cause was identified as a thrashing invalidation of a valid path, resulted in stuttering between repath timer cycles.

Toolchain

• Windows MSVC VS2022

Linked Issues

• related Bot CTG gameplay behaviors #1600

[sunzenshen]

This is honestly kind of an annoying scenario to reproduce (the bug only happens when the ghoster team is closer to the cap zone than any enemy), but it can help to noclip;buddha; and fly around with the ghost until one team gets closer to their cap zone than any opposing enemy. At that point, you can drop the ghost for the closer team. Then ironically I've had to shoot my teammates if I saw that they were going to interfere with an enemy trying to make a breakaway run for the cap zone.