Disable update checker on Flatpak (#3051)

Co-authored-by: Felanbird <41973452+Felanbird@users.noreply.github.com>
Co-authored-by: pajlada <rasmus.karlsson@pajlada.com>

CHANGELOG.md

@@ -10,6 +10,7 @@
 - Bugfix: Fixed "smiley" emotes being unable to be "Tabbed" with autocompletion, introduced in v2.3.3. (#3010)
 - Bugfix: Fixed comma appended to username completion when not at the beginning of the message. (#3060)
 - Dev: Ubuntu packages are now available (#2936)
+- Dev: Disabled update checker on Flatpak. (#3051)
 
 ## 2.3.3
 

src/singletons/Updates.cpp

@@ -240,6 +240,12 @@ void Updates::checkForUpdates()
         return;
     }
 
+    // Disable updates on Flatpak
+    if (QFileInfo::exists("/.flatpak-info"))
+    {
+        return;
+    }
+
     // Disable updates if on nightly
     if (Modes::instance().isNightly)
     {