Paraophthalmic Internal Carotid Artery Aneurysm: Incidental Paraophthalmic Aneurysm of the Right Internal Carotid Artery, Treated with Intra- and Extrasaccular Flow Diversion; Hyperresponse on Antiplatelet Medication with Sulcal Subarachnoid Hemorrhage; Reduction of the Antiplatelet Medication Dosage; Thromboembolic Occlusion of the p64 Flow Diverter Only 24 h After the Last Intake of Ticagrelor; Thrombectomy with Recanalization of the p64 and Good Clinical Outcome