Add Tracing failed to knownBugPatterns with a "use official build message"

#### Provide the steps to reproduce
1. Run LH on https://reg-game.netlify.com/

#### What is the current behavior?

The following message appears

> Ah, sorry, we ran into an error.

```
Protocol error (Tracing.end): Tracing failed

Channel: DevTools
Initial URL: https://reg-game.netlify.com/
Chrome Version: 78.0.3882.0
Stack Trace: Error: Protocol error (Tracing.end): Tracing failed
at Function.fromProtocolMessage (devtools://devtools/remote/serve_file/@19d4547535ab5aba70b4730443f84e8153052174/audits_worker/audits_worker_module.js:1603:121)
at eval (devtools://devtools/remote/serve_file/@19d4547535ab5aba70b4730443f84e8153052174/audits_worker/audits_worker_module.js:1209:253)
```

#### What is the expected behavior?
No error appears

#### Environment Information
* Affected Channels: DevTools
* Lighthouse version:
* Chrome version: Chromium Version 78.0.3882.0 (Developer Build) (64-bit)
* Operating System: MacOS 10.15.2 (19C57)

Locate the knownBugPatterns entry point in the Lighthouse repository and review the issue discussion for the intended wording. Add the Tracing failed pattern with a message directing users to an official build, then verify the existing known-bug matching tests if they cover this list.

Written by the indexing model from the issue text.