game_list: Make CompatibilityList parameter of NavigateToGamedbEntryRequested() a const reference

The compatibility list isn't modified within any of the slots connected
to this signal, so we can make it const to enforce immutability.

src/yuzu/game_list.h

@@ -89,7 +89,8 @@ signals:
     void GameChosen(QString game_path);
     void ShouldCancelWorker();
     void OpenFolderRequested(u64 program_id, GameListOpenTarget target);
-    void NavigateToGamedbEntryRequested(u64 program_id, CompatibilityList& compatibility_list);
+    void NavigateToGamedbEntryRequested(u64 program_id,
+                                        const CompatibilityList& compatibility_list);
 
 private slots:
     void onTextChanged(const QString& newText);

src/yuzu/main.cpp

@@ -727,7 +727,7 @@ void GMainWindow::OnGameListOpenFolder(u64 program_id, GameListOpenTarget target
 }
 
 void GMainWindow::OnGameListNavigateToGamedbEntry(u64 program_id,
-                                                  CompatibilityList& compatibility_list) {
+                                                  const CompatibilityList& compatibility_list) {
     const auto it = FindMatchingCompatibilityEntry(compatibility_list, program_id);
 
     QString directory;

src/yuzu/main.h

@@ -138,7 +138,8 @@ private slots:
     /// Called whenever a user selects a game in the game list widget.
     void OnGameListLoadFile(QString game_path);
     void OnGameListOpenFolder(u64 program_id, GameListOpenTarget target);
-    void OnGameListNavigateToGamedbEntry(u64 program_id, CompatibilityList& compatibility_list);
+    void OnGameListNavigateToGamedbEntry(u64 program_id,
+                                         const CompatibilityList& compatibility_list);
     void OnMenuLoadFile();
     void OnMenuLoadFolder();
     void OnMenuInstallToNAND();