EXP-1641 FIXED Snapshot floater doesn't persist between sessions anymore to...

EXP-1641 FIXED Snapshot floater doesn't persist between sessions anymore to avoid capturing login screen.

indra/newview/skins/default/xui/en/floater_snapshot.xml

@@ -10,7 +10,7 @@
  name="Snapshot"
  help_topic="snapshot"
  save_rect="true"
- save_visibility="true"
+ save_visibility="false"
  title="SNAPSHOT PREVIEW"
  width="470">
     <floater.string