Do not fail on timeout for toAlways and toNever

[bnickel]

Our CI system runs on up to 4 parallel simulators, putting the CPU under higher-than-average stress levels. As a result, we get occasional flakiness when toEventually, toAlways and toNever encounter a blocked run loop.

In this scenario, it doesn't really make sense for toAlways and toNever to fail, since the conditions weren't violated in the extended timeout window.

This change addresses that issue by resolving with .timeOut for continous AsyncMatchStyles even when the main loop is blocked.

Checklist - While not every PR needs it, new features should consider this list:

• Does this have tests?
• Does this have documentation?
• Does this break the public API (Requires major version bump)?
• Is this a new feature (Requires minor version bump)?

[younata]

Looks like this is failing to build on linux with swift 6.0+

Edit: No, that's your previous PR, which I merged without checking CI. That's on me.