Fix for issue custom api key always saved even on cancel (JabRef#11977)

* Added temporary property to fix the issue.

* Added comments.

* Modified CHANGELOG.md

* Rename variable and modify comments.

* Use apiKeys directly and change to ObservableList

* Remove comments.

* Get an immutable list.

CHANGELOG.md

@@ -96,6 +96,7 @@ Note that this project **does not** adhere to [Semantic Versioning](https://semv
 - We fixed an issue where recently opened files were not displayed in the main menu properly. [#9042](https://github.com/JabRef/jabref/issues/9042)
 - We fixed an issue where the DOI lookup would show an error when a DOI was found for an entry. [#11850](https://github.com/JabRef/jabref/issues/11850)
 - We fixed an issue where <kbd>Tab</kbd> cannot be used to jump to next field in some single-line fields. [#11785](https://github.com/JabRef/jabref/issues/11785)
+- We fixed an issue where web search preferences "Custom API key" table modifications not discarded. [#11925](https://github.com/JabRef/jabref/issues/11925)
 
 ### Removed
 

src/main/java/org/jabref/gui/preferences/websearch/WebSearchTabViewModel.java

@@ -56,7 +56,7 @@ public class WebSearchTabViewModel implements PreferenceTabViewModel {
     private final BooleanProperty grobidEnabledProperty = new SimpleBooleanProperty();
     private final StringProperty grobidURLProperty = new SimpleStringProperty("");
 
-    private final ListProperty<FetcherApiKey> apiKeys = new SimpleListProperty<>();
+    private final ObservableList<FetcherApiKey> apiKeys = FXCollections.observableArrayList();
     private final ObjectProperty<FetcherApiKey> selectedApiKeyProperty = new SimpleObjectProperty<>();
     private final BooleanProperty apikeyPersistProperty = new SimpleBooleanProperty();
     private final BooleanProperty apikeyPersistAvailableProperty = new SimpleBooleanProperty();
@@ -138,7 +138,10 @@ public void setValues() {
         grobidEnabledProperty.setValue(grobidPreferences.isGrobidEnabled());
         grobidURLProperty.setValue(grobidPreferences.getGrobidURL());
 
-        apiKeys.setValue(FXCollections.observableArrayList(preferences.getImporterPreferences().getApiKeys()));
+        apiKeys.setAll(preferences.getImporterPreferences().getApiKeys().stream()
+                                  .map(apiKey -> new FetcherApiKey(apiKey.getName(), apiKey.shouldUse(), apiKey.getKey()))
+                                  .toList());
+
         apikeyPersistAvailableProperty.setValue(OS.isKeyringAvailable());
         apikeyPersistProperty.setValue(preferences.getImporterPreferences().shouldPersistCustomKeys());
         catalogs.addAll(WebFetchers.getSearchBasedFetchers(importFormatPreferences, importerPreferences)
@@ -213,7 +216,7 @@ public StringProperty grobidURLProperty() {
         return grobidURLProperty;
     }
 
-    public ListProperty<FetcherApiKey> fetcherApiKeys() {
+    public ObservableList<FetcherApiKey> fetcherApiKeys() {
         return apiKeys;
     }