[inspector] Add test that const declaration is side-effecting

Add a test that const declarations are recognized as having side-
effects in REPL mode.

Bug: chromium:1043151
Change-Id: I6f8038ab4a5ee446d23904ed46637223157db5c7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2013114Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65916}

test/inspector/runtime/evaluate-repl-mode-side-effecting-expected.txt

@@ -26,6 +26,33 @@ Test "let" declaration is side-effecting
         }
     }
 }
+Test "const" declaration is side-effecting
+{
+    id : <messageId>
+    result : {
+        exceptionDetails : {
+            columnNumber : -1
+            exception : {
+                className : EvalError
+                description : EvalError: Possible side-effect in debug-evaluate
+                objectId : <objectId>
+                subtype : error
+                type : object
+            }
+            exceptionId : <exceptionId>
+            lineNumber : -1
+            scriptId : <scriptId>
+            text : Uncaught
+        }
+        result : {
+            className : EvalError
+            description : EvalError: Possible side-effect in debug-evaluate
+            objectId : <objectId>
+            subtype : error
+            type : object
+        }
+    }
+}
 Test side-effect free expressions can be eagerly evaluated
 {
     id : <messageId>

test/inspector/runtime/evaluate-repl-mode-side-effecting.js

@@ -10,6 +10,9 @@ Protocol.Runtime.enable();
   InspectorTest.log('Test "let" declaration is side-effecting');
   await evaluateRepl('let x = 21;');
 
+  InspectorTest.log('Test "const" declaration is side-effecting');
+  await evaluateRepl('const y = 42;');
+
   InspectorTest.log('Test side-effect free expressions can be eagerly evaluated');
   await evaluateRepl('1 + 2');
   await evaluateRepl('"hello " + "REPL"');