[download] limit download progress reporting to once per second

More often isn't needed and runs into issues with UI refresh rates and worse notification rate-limiting which causes important notifications to get missed

libs/download/src/androidMain/kotlin/org/fdroid/download/Downloader.kt

@@ -180,7 +180,7 @@ public abstract class Downloader(
 
     private fun reportProgress(lastTimeReported: Long, bytesRead: Long, bytesTotal: Long): Long {
         val now = System.currentTimeMillis()
-        return if (now - lastTimeReported > 100) {
+        return if (now - lastTimeReported > 1000) {
             log.debug { "onProgress: $bytesRead/$bytesTotal" }
             progressListener?.onProgress(bytesRead, bytesTotal)
             now