feat: complete remaining jetstream parity implementation plan

tests/NATS.Server.Tests/JetStreamStreamLifecycleApiTests.cs

@@ -0,0 +1,16 @@
+namespace NATS.Server.Tests;
+
+public class JetStreamStreamLifecycleApiTests
+{
+    [Fact]
+    public async Task Stream_update_and_delete_roundtrip()
+    {
+        await using var fx = await JetStreamApiFixture.StartWithStreamAsync("ORDERS", "orders.*");
+
+        var update = await fx.RequestLocalAsync("$JS.API.STREAM.UPDATE.ORDERS", "{\"subjects\":[\"orders.v2.*\"]}");
+        update.Error.ShouldBeNull();
+
+        var delete = await fx.RequestLocalAsync("$JS.API.STREAM.DELETE.ORDERS", "{}");
+        delete.Success.ShouldBeTrue();
+    }
+}