fix(core): Do not print errors prop for non-AggregateError errors (#17123)

This commit fixes formatting of JSError with "errors" property. Before this
commit all instances of "Error" were treated as if they were "AggregateError"
if they had "errors" property. After this commit only actual instances of 
"AggregateError" are formatted in such a way, while instances of "Error"
that have "errors" property are formatted without showing details of "errors".

1 files changed, 10 insertions, 0 deletions

diff --git a/cli/tests/testdata/run/error_with_errors_prop.js b/cli/tests/testdata/run/error_with_errors_prop.js
new file mode 100644
index 000000000..d1c6bbfaa
--- /dev/null
+++ b/cli/tests/testdata/run/error_with_errors_prop.js
@@ -0,0 +1,10 @@
+const error = new Error("Error with errors prop.");
+error.errors = [
+  new Error("Error message 1."),
+  new Error("Error message 2."),
+];
+console.log(error.stack);
+console.log();
+console.log(error);
+console.log();
+throw error;