"Seen by" uses 12h time (Fixes #1378)

DateUtils.FORMAT_SHOW_TIME has to be used for i18n to be effective on DateUtils.getRelativeDateTimeString(), do not ask me why.
Also internal switching of language does not have effect on this method, you'll have to restart the application.

CHANGES.md

@@ -12,6 +12,7 @@ Improvements 🙌:
 Bugfix 🐛:
  - After jump to unread, newer messages are never loaded (#1008)
  - Fix issues with FontScale switch (#69, #645)
+ - "Seen by" uses 12h time (#1378)
 
 Translations 🗣:
  -

vector/src/main/java/im/vector/riotx/core/date/VectorDateFormatter.kt

@@ -45,11 +45,12 @@ class VectorDateFormatter @Inject constructor(private val context: Context,
         if (time == null) {
             return ""
         }
-        return DateUtils.getRelativeDateTimeString(context,
-                                                   time,
-                                                   DateUtils.DAY_IN_MILLIS,
-                                                   2 * DateUtils.DAY_IN_MILLIS,
-                                                   DateUtils.FORMAT_SHOW_WEEKDAY
+        return DateUtils.getRelativeDateTimeString(
+                context,
+                time,
+                DateUtils.DAY_IN_MILLIS,
+                2 * DateUtils.DAY_IN_MILLIS,
+                DateUtils.FORMAT_SHOW_WEEKDAY or DateUtils.FORMAT_SHOW_TIME
         ).toString()
     }
 }