hotline_#16652_search_with_bib_filter fix test failures

tests/application/modules/opac/controllers/BibControllerTest.php

@@ -326,6 +326,9 @@ class BibControllerBibViewInexistantTest extends BibControllerWithZoneTestCase {
 abstract class BibControllerSelectionTestCase extends AbstractControllerTestCase {
 		public function setUp() {
 		parent::setUp();
+		unset($_REQUEST['geo_zone']);
+		unset($_REQUEST['geo_bib']);
+		unset($_SESSION['selection_bib']);
 		$_SESSION['selection_bib'] = ['id_bibs' => []];
 
 		$this->fixture('Class_Zone',