[frontend] Improv filter style

[RomuDeuxfois]

• Filters in list of payload in an inject “Target players only” doesn’t work if the filter injector is removed
• When a filter is empty, it should look like in openCTI , the whole text is clickable not only “Content”:

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 31.32%. Comparing base (b2674d0) to head (7ca3efc). Report is 4 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1433 +/- ## ========================================= Coverage 31.32% 31.32% Complexity 1400 1400 ========================================= Files 526 526 Lines 13693 13693 Branches 814 814 ========================================= Hits 4289 4289 Misses 9204 9204 Partials 200 200 ```

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