Fix #23078: Improve cancel action on OSM API errors (patch by gaben, heavily modified)

git-svn-id: https://josm.openstreetmap.de/svn/trunk@18779 0c6e7542-c601-0410-84e7-c038aed88b3b

Author: taylor.smock

src/org/openstreetmap/josm/io/OsmApi.java

@@ -248,6 +248,9 @@ public void initialize(ProgressMonitor monitor, boolean fastFail) throws OsmTran
         if (initialized)
             return;
         cancel = false;
+        if (monitor != null) {
+            monitor.addCancelListener(this::cancel);
+        }
         try {
             CapabilitiesCache cache = new CapabilitiesCache(monitor, fastFail);
             try {