[WIP] test: filter calculations

[Xazin]

There is a bug that needs to be resolved, the regression test has been added but with the expects commented out at the moment.

PR Checklist

• [x] My code adheres to AppFlowy's Conventions
• [ ] I've listed at least one issue that this PR fixes in the description above.
• [x] I've added a test(s) to validate changes in this PR, or this PR only contains semantic changes.
• [x] All existing tests are passing.

[Xazin]

This will be merged before 0.7.2 release, but requires another PR/changes to fix the filter bug.