word_search: mark ambiguous cross references with question mark icon

docs/changelog/v0.4.0.md

@@ -20,6 +20,7 @@
 - (Re)added a custom splash screen for nicer looking app startup.
 - (Re)added a custom launcher icon for the app.
 - Don't collapse meaning/yomi lists in kanji search results despite the list being long.
+- Mark ambiguous antonyms and "See also" references with a question mark icon.
 
 ## Bugfixes 🐞
 

lib/components/search/search_results_body/parts/sense/sense.dart

@@ -88,6 +88,9 @@ class Sense extends StatelessWidget {
                         (antonym) => SearchResultCard(
                           result: antonym.xrefResult!,
                           backgroundColor: Colors.black38,
+                          leading: antonym.ambiguous
+                              ? const Icon(Icons.question_mark)
+                              : null,
                         ),
                       ),
                   if (sense.seeAlso.isNotEmpty &&
@@ -102,6 +105,9 @@ class Sense extends StatelessWidget {
                         (seeAlso) => SearchResultCard(
                           result: seeAlso.xrefResult!,
                           backgroundColor: Colors.black38,
+                          leading: seeAlso.ambiguous
+                              ? const Icon(Icons.question_mark)
+                              : null,
                         ),
                       ),
                 ]