Updated the Clear Selection action to work in the Decompiler

Fixes #7241

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/action/FunctionGraphEditableVertexLocationActionContext.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -15,13 +15,15 @@
  */
 package ghidra.app.plugin.core.functiongraph.action;
 
+import java.util.Set;
+
+import org.apache.commons.lang3.StringUtils;
+
 import ghidra.app.context.ListingActionContext;
 import ghidra.app.context.RestrictedAddressSetContext;
 import ghidra.app.plugin.core.functiongraph.FGProvider;
 import ghidra.app.plugin.core.functiongraph.graph.vertex.FGVertex;
 
-import java.util.Set;
-
 public class FunctionGraphEditableVertexLocationActionContext extends ListingActionContext
 		implements FunctionGraphVertexLocationContextIf, RestrictedAddressSetContext {
 
@@ -52,4 +54,15 @@ public class FunctionGraphEditableVertexLocationActionContext extends ListingAct
 	public Set<FGVertex> getSelectedVertices() {
 		return vertexInfo.getSelectedVertices();
 	}
+
+	@Override
+	public boolean hasSelection() {
+		FGProvider provider = (FGProvider) getComponentProvider();
+		String textSelection = provider.getTextSelection();
+		if (!StringUtils.isBlank(textSelection)) {
+			return true;
+		}
+
+		return super.hasSelection();
+	}
 }