[STAL-2057] Hardcode include testing rules in CLI

[modernplumbing]

What problem are you trying to solve?

When using the Analyzer via the CLI, all rules, including testing rules, should be included.

What is your solution?

By hard-coding that all rules, including testing rules, should be pulled from the API, we remove the complexity associated with parameterizing whether or not testing rules should be included. The con of including testing rules by default is virtually only that additional results are in the resulting SARIF file. When the SARIF file gets sent to Datadog, violations from testing rules are hidden in the UI by default (but is easily accessed via a toggle). The pro of including testing rules by default is that it reduces the number of places a user needs to specify that testing rules should be included.

Alternatives considered

1. Making the query param exclude_testing_rules instead of include_testing_rules. The con of this is that we'd need to change the semantics of this feature in many places.
2. Update Github Action to specify that testing rules should be included, and update usage of the GHA and the CLI in many places. This choice would also result in a more manual work, and also no guarantee that all downstream consumers would pick up this change.

What the reviewer should know