Trim accidentally added space at the end of filename (commons-app#2967)

* Fixes commons-app#2917: App adds space at end of filename sometimes

* Fix commons-app#2917: Trims accidental space at the end of the filename

Author: VitalyVPinchuk

app/src/main/java/fr/free/nrw/commons/mwapi/ApacheHttpClientMediaWikiApi.java

@@ -815,7 +815,9 @@ public Single<UploadResult> uploadFileFinalize(
                 return new UploadResult(resultStatus, errorCode);
             } else {
                 Date dateUploaded = parseMWDate(result.getString("/api/upload/imageinfo/@timestamp"));
-                String canonicalFilename = "File:" + result.getString("/api/upload/@filename").replace("_", " "); // Title vs Filename
+                String canonicalFilename = "File:" + result.getString("/api/upload/@filename")
+                        .replace("_", " ")
+                        .trim(); // Title vs Filename
                 String imageUrl = result.getString("/api/upload/imageinfo/@url");
                 return new UploadResult(resultStatus, dateUploaded, canonicalFilename, imageUrl);
             }