Bug 1823085 - NoSuchElementException fix (#1420) (#1688)

* Bug 1823085 - NoSuchElementException fix - the search engines list does not contain any element matching the conditions, so calling first on that list will throw an exception

* Bug 1823085 - NoSuchElementException fix - the search engines list does not contain any element matching the conditions, so calling first on that list will throw an exception

(cherry picked from commit 284d0be312bf95f317f218831530fd044ae0cb03)

Co-authored-by: Alexandra Virvara <127850062+Alexandra-Virvara@users.noreply.github.com>

app/src/main/java/org/mozilla/fenix/settings/search/RadioSearchEngineListPreference.kt

@@ -171,16 +171,25 @@ class RadioSearchEngineListPreference @JvmOverloads constructor(
     ) {
         val selectedOrDefaultSearchEngine = context.components.core.store.state.search.selectedOrDefaultSearchEngine
         if (selectedOrDefaultSearchEngine == engine) {
-            val nextSearchEngine = if (context.settings().showUnifiedSearchFeature) {
-                context.components.core.store.state.search.searchEngines.first {
-                    it.id != engine.id && (it.isGeneral || it.type == SearchEngine.Type.CUSTOM)
-                }
-            } else {
-                context.components.core.store.state.search.searchEngines.first {
-                    it.id != engine.id
+            val nextSearchEngine =
+                if (context.settings().showUnifiedSearchFeature) {
+                    context.components.core.store.state.search.searchEngines.firstOrNull {
+                        it.id != engine.id && (it.isGeneral || it.type == SearchEngine.Type.CUSTOM)
+                    }
+                        ?: context.components.core.store.state.search.searchEngines.firstOrNull {
+                            it.id != engine.id
+                        }
+                } else {
+                    context.components.core.store.state.search.searchEngines.firstOrNull {
+                        it.id != engine.id
+                    }
                 }
+
+            nextSearchEngine?.let {
+                context.components.useCases.searchUseCases.selectSearchEngine(
+                    nextSearchEngine,
+                )
             }
-            context.components.useCases.searchUseCases.selectSearchEngine(nextSearchEngine)
         }
         context.components.useCases.searchUseCases.removeSearchEngine(engine)