return updated selectedPeople with onClose

web/src/lib/components/faces-page/merge-face-selector.svelte

@@ -76,6 +76,15 @@
       handleError(error, $t('cannot_merge_people'));
     }
   };
+
+  const showPeopleViewModal = async () => {
+    // Sets the selected people that remained after closing the modal.
+    selectedPeople = await modalManager.show(PeopleViewModal, {
+      people: selectedPeople,
+      peopleToNotShow: [person],
+      screenHeight
+    });
+  };
 </script>
 
 <svelte:window bind:innerHeight={screenHeight} />
@@ -123,12 +132,7 @@
                         aria-label={$t('show_all_selected_people')}
                         icon={mdiPlus}
                         size="medium"
-                        onclick={() => modalManager.show(PeopleViewModal, {
-                          people: peopleToNotShow,
-                          peopleToNotShow: [person],
-                          screenHeight,
-                          onSelect
-                        })}
+                        onclick={showPeopleViewModal}
                       />
                     </div>
                   {/if}

web/src/lib/modals/PeopleViewModal.svelte

@@ -8,15 +8,22 @@
     people: PersonResponseDto[];
     peopleToNotShow: PersonResponseDto[];
     screenHeight: number;
-    onSelect: (person: PersonResponseDto) => void;
-    onClose: () => void;
+    onClose: (people: PersonResponseDto[]) => void;
   }
 
-  let { people, peopleToNotShow, screenHeight, onSelect, onClose }: Props = $props();
+  let { people, peopleToNotShow, screenHeight, onClose }: Props = $props();
+
+  // Hides the selected person.
+  const onSelect = (selected: PersonResponseDto) => {
+    if (people.includes(selected)) {
+      people = people.filter((person) => person.id !== selected.id);
+      return;
+    }
+  };
 
 </script>
 
-<Modal title={$t('selected_people_to_merge')} size="full" {onClose}>
+<Modal title={$t('selected_people_to_merge')} size="full" onClose={() => onClose(people)}>
   <ModalBody>
     <p class="mb-4 text-center dark:text-white">{$t('choose_people_to_unselect')}</p>
     <PeopleList {people} {peopleToNotShow} {screenHeight} {onSelect} />