fix: handle the case where no projects are open in Eclipse on start

Author: acke

plugin/src/main/java/io/snyk/eclipse/plugin/views/snyktoolview/RootNode.java

@@ -17,6 +17,12 @@ public void reset() {
 		super.reset();
 		List<IProject> openProjects = ResourceUtils.getAccessibleTopLevelProjects();
 
+		if (openProjects.isEmpty()) {
+			var contentRoot = new ContentRootNode("No projects in workspace to scan", null);
+			this.addChild(contentRoot);
+
+		}
+
 		for (IProject project : openProjects) {
 			Path path = ResourceUtils.getFullPath(project);
 			var contentRoot = new ContentRootNode(project.getName(), path);

plugin/src/main/java/io/snyk/eclipse/plugin/views/snyktoolview/handlers/EnableAllSeveritiesHandler.java

@@ -24,8 +24,6 @@ public EnableAllSeveritiesHandler() {
 	public Object execute(ExecutionEvent event) throws ExecutionException {
 		super.execute(event);
 
-		TreeFilterManager.getInstance().removeTreeFilter(this.preferenceKey);
-
 		return null;
 	}