Add support for client assertions in the OAuth 2 plugin (#395)

Co-authored-by: Davide Becker <github@reg.davide.me>
Co-authored-by: Gregory Schier <gschier1990@gmail.com>

src-web/components/DynamicForm.tsx

@@ -616,5 +616,16 @@ function KeyValueArg({
 
 function hasVisibleInputs(inputs: FormInput[] | undefined): boolean {
   if (!inputs) return false;
-  return inputs.some((i) => !i.hidden);
+
+  for (const input of inputs) {
+    if ('inputs' in input && !hasVisibleInputs(input.inputs)) {
+      // Has children, but none are visible
+      return false;
+    }
+    if (!input.hidden) {
+      return true;
+    }
+  }
+
+  return false;
 }