Improve frontend integration tests between summary and zoom view

[ckcherry23]

What feature(s) would you like to see in RepoSense

On the frontend, changes in the summary panel affect the zoom panel as well (e.g., changing the granularity, and changing the selected file types affects the commits shown on the zoom panel).

Is the feature request related to a problem?

Other test cases, such as in #1930, rely on the correctness of this functionality between the summary and zoom panels.

If possible, describe the solution

Minimally add the following test cases:

• Check that changing the granularity in the summary panel correctly filters the commits in the zoom panel
• Check that changing the selected file types in the summary panel correctly filters the commits in the zoom panel

Additional context

This solution would be an extension of what has been implemented in #2015.