test: make test-error-reporting engine agnostic

Remove or modify checks in test-error-reporting that only apply to V8
and not to ChakraCore.

PR-URL: #16272
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

test/parallel/test-error-reporting.js

@@ -32,17 +32,14 @@ function errExec(script, callback) {
     assert.ok(err);
 
     // More than one line of error output.
-    assert.ok(stderr.split('\n').length > 2);
-
-    // Assert the script is mentioned in error output.
-    assert.ok(stderr.includes(script));
+    assert.ok(stderr.split('\n').length);
 
     // Proxy the args for more tests.
     callback(err, stdout, stderr);
   });
 }
 
-const syntaxErrorMessage = /SyntaxError/;
+const syntaxErrorMessage = /\bSyntaxError\b/;
 
 
 // Simple throw error
@@ -65,7 +62,6 @@ errExec('throws_error3.js', common.mustCall(function(err, stdout, stderr) {
 
 // throw ILLEGAL error
 errExec('throws_error4.js', common.mustCall(function(err, stdout, stderr) {
-  assert.ok(/\/\*\*/.test(stderr));
   assert.ok(syntaxErrorMessage.test(stderr));
 }));