[macos] fix bug 78050

macos/ONLYOFFICE/Code/Controllers/Common/ASCCommonViewController.mm

@@ -1872,6 +1872,9 @@
                                                                            @"type": [ASCThemesController isCurrentThemeDark] ? @"dark" : @"light",
                                                                            @"system": mode}];
         [[ASCEditorJSVariables instance] apply];
+
+        json = [[NSMutableDictionary alloc] initWithDictionary: @{@"theme": [ASCThemesController actualThemeId]}];
+        appManager->UpdatePlugins([[json jsonString] stdwstring]);
     }
 }
 

macos/ONLYOFFICE/Code/Controllers/Common/ASCThemesController.h

@@ -60,6 +60,7 @@ static NSString * const windowBackgroundColor           = @"window-backg
 + (NSString*)currentThemeId;
 + (BOOL)isCurrentThemeDark;
 + (NSString*)defaultThemeId:(BOOL)isdark;
++ (NSString*)actualThemeId;
 + (NSColor*)color:(NSString*)name forTheme:(NSString*)theme;
 + (NSColor*)currentThemeColor:(NSString*)name;
 + (BOOL)isSystemDarkMode;

macos/ONLYOFFICE/Code/Controllers/Common/ASCThemesController.m

@@ -121,6 +121,13 @@
     return isdark ? uiThemeNight : uiThemeWhite;
 }
 
++ (NSString*)actualThemeId {
+    NSString * theme = [self currentThemeId];
+    if ([uiThemeSystem isEqualToString:theme]) {
+        return [self defaultThemeId:[self isCurrentThemeDark]];
+    } else return theme;
+}
+
 + (NSColor*)currentThemeColor:(NSString*)name {
     return [self color:name forTheme:[self currentThemeId]];
 }