DO NOT MERGE Replace the placeholder Japanese era name in calendar.properties

There are no corresponding changes in upstream, however, still replacing
new era placeholder with actual era name for consistency.

Bug: 131312444
Test: CtsLibcoreTestCases
Test: CtsLibcoreOjTestCases
Change-Id: If231c253a7797776189fc9e87779a9d674984b55
Merged-In: If231c253a7797776189fc9e87779a9d674984b55
(cherry picked from commit 076d67b4d27783a0a575bc0651d3a3b6f53117ca)
1 file changed