test: Ensure bypass_actors serializes as an empty array when clearing ruleset bypass actors

[MathieuSevegny]

As asked in #3727, here's a test to ensure bypass_actors is never serialized as null when clearing bypass actors.

Test is failing prior to the fix and passes with the current implementation.

Validates #3726

[gmlewis]

Thank you, @MathieuSevegny!
LGTM.
Merging.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.11%. Comparing base (1b53270) to head (9983167).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@## master #3734 +/- ##
=======================================
Coverage 91.11% 91.11% =======================================
Files 187 187 Lines 16686 16686 =======================================
Hits 15204 15204 Misses 1295 1295 Partials 187 187 

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