Selected languages reset when changing the time range for Page Access statistics

[juliankehne]

Describe the Bug

Potentially an enhancement instead of a bug. Feel free to change.

Changing the time range for the statistic resets the selection of languages
Example: A user deselects languages, then decides to change the time range afterwards, all languages get selected again.

Steps to Reproduce

1. Go to 'Statistics'
2. Deselect a language
3. Change the time range
4. See that all languages get selected again

Expected Behavior

Languages stay deselected / After changing the time range the selected languages do not change

Actual Behavior

After changing the time range the selected languages reset

Additional Information

Traceback

Related Issues

Discussed in here: #3133