Tray: use more "stable" image format.

The `toBitmap` method is actually quite "unstable": it's behavior varies
from platform and produce different results. It's not reliable for hash
verifications, therefore a better format of an image should be used.

This commit changes the format to PNG and regenrates checksums for it.
This should produce much more reliable results than it was before.

sources/code/common/global.ts

@@ -24,8 +24,8 @@ export function isJsonSyntaxCorrect(string: string) {
 /** SHA1 hashes of Discord favicons (in RAW bitmap format). */
 export const discordFavicons = {
   /** Default favicon (without *blue dot* indicator). */
-  default: "25522cef7e234ab001bbbc85c7a3f477b996e20b",
-  unread: "e6cba81a4e4189bb44df2c7ae63c79d8e80a3660"
+  default: "a971976200e0abf8d8a9fad46b7309363ef3cd01",
+  unread: "3133ab8ef98ea83f1573f6c3902c027015c005bf"
 };
 
 /**

sources/code/main/windows/main.ts

@@ -283,13 +283,14 @@ export default function createMainWindow(flags:MainWindowFlags): BrowserWindow {
   win.webContents.on("page-favicon-updated", (_event, favicons) => {
     let icon: NativeImage, flash = false;
     // Convert from DataURL to RAW.
-    const faviconRaw = nativeImage.createFromDataURL(favicons[0]??"").toBitmap();
+    const faviconBuffer = nativeImage.createFromDataURL(favicons[0]??"").toPNG();
     // Hash discord favicon.
-    const faviconHash = createHash("sha1").update(faviconRaw).digest("hex");
+    const faviconHash = createHash("sha1").update(faviconBuffer).digest("hex");
     // Stop execution when icon is same as the one set.
     if (faviconHash === setFavicon) return;
     // Stop code execution on Fosscord instances.
-    const currentInstance = knownInstancesList.find((value) => value[1].origin === new URL(win.webContents.getURL()).origin);
+    const currentInstance = knownInstancesList
+      .find((value) => value[1].origin === new URL(win.webContents.getURL()).origin);
     if (currentInstance?.[2] !== true) {
       setFavicon = faviconHash;
       icon = appInfo.icons.tray.default;