[Fonts] Migrate ChatLog surfaces to theme font role (#7537)

* [Fonts] Migrate ChatLog surfaces to theme font role

* [Fonts] Keep ChatView on the app font and share the report log font

- ChatLog's unset fallback is qApp->font() again: ChatView never set a font
  before the role existed, so an unset role must not switch chat and the game
  log to monospace at the system GeneralFont size.
- Move the monospace fallback the report dialogs used before into
  report_utils::reportLogFont(), which returns the theme's ChatLog role when it
  is set and the old monospace otherwise. tab_report, dlg_my_reports and
  dlg_report_user now share it, so they cannot drift and they honour a themed
  size instead of overriding it.

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

cockatrice/src/interface/widgets/tabs/tab_report.cpp

@@ -1,5 +1,6 @@
 #include "tab_report.h"
 
+#include "../interface/theme_manager.h"
 #include "../server/user/user_context_menu.h"
 #include "../utility/report_utils.h"
 #include "abstract_client.h"
@@ -12,6 +13,7 @@
 #include <QComboBox>
 #include <QDateTime>
 #include <QDebug>
+#include <QFont>
 #include <QGridLayout>
 #include <QGroupBox>
 #include <QHBoxLayout>
@@ -137,7 +139,8 @@ TabReport::TabReport(TabSupervisor *_tabSupervisor, AbstractClient *_client) : T
     chatGroup = new QGroupBox;
     chatLogEdit = new QTextEdit;
     chatLogEdit->setReadOnly(true);
-    chatLogEdit->setFont(QtUtils::monospaceFont());
+    applyChatLogFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &TabReport::applyChatLogFont);
     auto *chatLayout = new QVBoxLayout(chatGroup);
     chatLayout->setContentsMargins(4, 4, 4, 4);
     chatLayout->addWidget(chatLogEdit);
@@ -269,6 +272,11 @@ TabReport::TabReport(TabSupervisor *_tabSupervisor, AbstractClient *_client) : T
     refreshList();
 }
 
+void TabReport::applyChatLogFont()
+{
+    chatLogEdit->setFont(report_utils::reportLogFont());
+}
+
 void TabReport::retranslateUi()
 {
     userContextMenu->retranslateUi();