feat(YouTube/Custom branding icon): add old splash animation for Revancify Red and Revancify Blue

src/main/kotlin/app/revanced/util/ResourceUtils.kt

@@ -145,13 +145,13 @@ fun ResourceContext.copyXmlNode(
     resourceDirectory: String,
     targetResource: String,
     elementTag: String
-) {
-    val stringsResourceInputStream =
-        inputStreamFromBundledResource(resourceDirectory, targetResource)!!
-
+) = inputStreamFromBundledResource(
+    resourceDirectory,
+    targetResource
+)?.let { inputStream ->
     // Copy nodes from the resources node to the real resource node
     elementTag.copyXmlNode(
-        this.xmlEditor[stringsResourceInputStream],
+        this.xmlEditor[inputStream],
         this.xmlEditor["res/$targetResource"]
     ).close()
 }