8131017: jshell tool: pasting code with tabs invokes tab completion

Enabling copy-paste detection.

Reviewed-by: lagergren, rfield, sundar

langtools/src/jdk.jshell/share/classes/jdk/internal/jshell/tool/ConsoleIOContext.java

@@ -97,6 +97,7 @@ class ConsoleIOContext extends IOContext {
             }
         });
         in.setBellEnabled(true);
+        in.setCopyPasteDetection(true);
         in.addCompleter(new Completer() {
             private String lastTest;
             private int lastCursor;