Refresh file table after reading updater files

We create the UpdaterFrame with an underlying FileTable around an empty
FilesCollection, which is subsequently populated. However this
population is not immediately propagated to the FileTable. This results
in a stale TableRowSorter that does not initially know about all of the
files.

This is benign as the sorter isn't actually being used at the point of
creation, and once it is used it's updated. It would normally throw an
IOOBE except that apparently there was some work-around that prevented
this. In JDK-8078514 this work-around apparently was removed, and in
JDK-8160087 the behavior was changed to issue a warning, once, instead
of IOOBE.

When updating the Java version to JDK9 or newer we started seeing this
warning. In this patch we update the FileTable after the
FilesCollection is populated, which appears to avoid running into the
warning.

Author: hinerm

src/main/java/net/imagej/ui/swing/updater/ImageJUpdater.java

@@ -137,6 +137,7 @@ public void run() {
 						"Please download a recent version of this software.\n");
 			}
 			refreshUpdateSites(files);
+			main.updateFilesTable();
 			String warnings = files.reloadCollectionAndChecksum(progress);
 			main.checkWritable();
 			main.addCustomViewOptions();