merge: #10086

10086: Avoid race condition when polling for topology r=oleschoenburg a=npepinpe

## Description

This PR fixes a potential race condition when starting the `EmbeddedBrokerRule`. We poll for the topology and wait until it's complete. Unfortunately, if we're too fast and the request is rejected, the `.join()` will throw, which will be rethrown by `Awaitility` (as when using `untilAsserted` it only catches `AssertionError`), failing the test. By ignoring exceptions here we can focus on just failing when the topology is never complete (Awaitility will print out the last failure in that case).

## Related issues

related to #10084 



Co-authored-by: Nicolas Pepin-Perreault <nicolas.pepin-perreault@camunda.com>

broker/src/test/java/io/camunda/zeebe/broker/test/EmbeddedBrokerRule.java

@@ -248,6 +248,7 @@ public void startBroker(final PartitionListener... listeners) {
               .usePlaintext()
               .build()) {
         Awaitility.await("until we have a complete topology")
+            .ignoreExceptions()
             .untilAsserted(
                 () -> {
                   final var topology = client.newTopologyRequest().send().join();