[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/dialogs/dlg_report_user.cpp

@@ -1,10 +1,13 @@
 #include "dlg_report_user.h"
 
+#include "../interface/theme_manager.h"
+#include "../utility/report_utils.h"
 #include "abstract_client.h"
 #include "libcockatrice/protocol/pb/response.pb.h"
 
 #include <QComboBox>
 #include <QDialogButtonBox>
+#include <QFont>
 #include <QGridLayout>
 #include <QGroupBox>
 #include <QLabel>
@@ -91,7 +94,8 @@ DlgReportUser::DlgReportUser(AbstractClient *_client,
     auto *chatLayout = new QVBoxLayout(chatGroup);
     chatLogEdit = new QTextEdit;
     chatLogEdit->setReadOnly(true);
-    chatLogEdit->setFont(QtUtils::monospaceFont());
+    applyChatLogFont();
+    connect(themeManager, &ThemeManager::fontsChanged, this, &DlgReportUser::applyChatLogFont);
     if (!_autoChatLog.isEmpty()) {
         chatLogEdit->setPlainText(_autoChatLog);
     } else {
@@ -120,6 +124,11 @@ DlgReportUser::DlgReportUser(AbstractClient *_client,
     layout->addWidget(buttonBox);
 }
 
+void DlgReportUser::applyChatLogFont()
+{
+    chatLogEdit->setFont(report_utils::reportLogFont());
+}
+
 void DlgReportUser::actSubmit()
 {
     const QString description = descriptionEdit->toPlainText().trimmed();