fix(tests): Moves muteAudio to ParticipantsPane.

tests/pageobjects/ParticipantsPane.ts

         await rejectButton.waitForExist();
         await rejectButton.click();
     }
+
+    /**
+     * Mutes the audio of a participant.
+     * @param participant
+     */
+    async muteAudio(participant: Participant) {
+        const participantId = await participant.getEndpointId();
+
+        await this.participant.driver.$(`#participant-item-${participantId}`).moveTo();
+
+        await this.participant.driver.$(`button[data-testid="mute-audio-${participantId}"]`).click();
+    }
 }

tests/specs/3way/audioVideoModeration.spec.ts

         await unmuteByModerator(p1, p2, true, false);
 
         // p1 mute audio on p2 and check
-        await p1.getFilmstrip().muteAudio(p2);
+        await p1.getParticipantsPane().muteAudio(p2);
         await p1.getFilmstrip().assertAudioMuteIconIsDisplayed(p2);
         await p2.getFilmstrip().assertAudioMuteIconIsDisplayed(p2);
 
         await unmuteByModerator(p1, p2, false, false);
 
         // mute and check
-        await p1.getFilmstrip().muteAudio(p2);
+        await p1.getParticipantsPane().muteAudio(p2);
         await p1.getFilmstrip().assertAudioMuteIconIsDisplayed(p2);
         await p2.getFilmstrip().assertAudioMuteIconIsDisplayed(p2);