Fix HED test assertions

Since the "internal error" for the null pointer is no longer thrown,
there is now only one issue for an invalid schema spec on this test.

Author: happy5214

src/tests/local/hed-integration.test.ts

@@ -44,7 +44,7 @@ Deno.test('hed-validator fails with bad schema version', async (t) => {
     const context = new BIDSContext(eventFile, dsContext)
     await context.asyncLoads()
     await hedValidate(schema as unknown as GenericSchema, context)
-    assertEquals(context.dataset.issues.size, 2)
-    assertEquals(context.dataset.issues.get({ code: 'HED_ERROR' }).length, 2)
+    assertEquals(context.dataset.issues.size, 1)
+    assertEquals(context.dataset.issues.get({ code: 'HED_ERROR' }).length, 1)
   })
 })