<fix>[header]: fix __example__ method names for LongJobProgressDetail

setProcessedBytes/setTotalBytes/setSpeedBytesPerSecond renamed to
setProcessed/setTotal/setSpeed in unit-agnostic refactor.
Add setUnit("bytes") to preserve semantic clarity.

Related: ZSTAC-82318
Change-Id: Ied29ac01d488062a03d792378432522fbf0a523f
Co-Authored-By: Claude Opus 4.6 (1M context) <ye.zou@zstack.io>

Author: AlanJager

header/src/main/java/org/zstack/header/core/progress/APIGetTaskProgressReply.java

@@ -35,9 +35,10 @@ public static APIGetTaskProgressReply __example__() {
         detail.setPercent(42);
         detail.setStage("downloading");
         detail.setState("running");
-        detail.setProcessedBytes(440401920L);
-        detail.setTotalBytes(1073741824L);
-        detail.setSpeedBytesPerSecond(10485760L);
+        detail.setProcessed(440401920L);
+        detail.setTotal(1073741824L);
+        detail.setUnit("bytes");
+        detail.setSpeed(10485760L);
         detail.setEstimatedRemainingSeconds(60L);
         inv.setProgressDetail(detail);