test: Ignore c3 data_types null crashes

This gets triggered by the CPUUsage DonutChart in
pkg/kubernetes/scripts/virtual-machines/components/VmMetricsTab.jsx.

This seems to be some race condition when switching pages, which
supposedly also means "(un)render in React". Cockpit code has no control
over this, and it also does not break the user experience, so ignore the
exception.

See c3js/c3#2187 and simlilar issues
bcbcarl/react-c3js#22 or
c3js/c3#1205.

test/common/cdp-driver.js

@@ -83,8 +83,15 @@ function setupLogging(client) {
         if (details.exception && details.exception.className === "PhWaitCondTimeout")
             return;
 
-        unhandledExceptions.push(details)
         process.stderr.write(details.description || JSON.stringify(details) + "\n");
+
+        // ignore c3 crashes (https://github.com/c3js/c3/issues/2187)
+        if (details.exception && details.exception.description &&
+            details.exception.description.indexOf("TypeError: Cannot read property 'data_types' of null") >= 0 &&
+            details.exception.description.indexOf("/kubernetes.js") >= 0)
+            return;
+
+        unhandledExceptions.push(details)
     });
 
     client.Log.enable();