my cats keep getting hissed at by the rubble spirits, but i noticed that when i call to action the shocked condition goes away, removing the effects of my cats getting hissed at before they get to their turn.

This sounds correct to me, since shocked and called to action are in the same condition group. Creatures can only have one condition in each group at a time (physical ones, emotional ones, and conditionier ones), so new ones override the old ones.

You can strategically use call to action to clear the group from conditions like afraid and shocked like this.