fix: run processing request body async in order to prevent event thre…

…ad blocking (#274)

Co-authored-by: Aliaksandr Stsiapanay <aliaksandr_stsiapanay@epam.com>

src/main/java/com/epam/aidial/core/controller/DeploymentPostController.java

@@ -133,7 +133,10 @@ private void handleRateLimitSuccess(String deploymentId) {
         proxy.getTokenStatsTracker().startSpan(context);
 
         context.getRequest().body()
-                .onSuccess(this::handleRequestBody)
+                .onSuccess(body -> proxy.getVertx().executeBlocking(() -> {
+                    handleRequestBody(body);
+                    return null;
+                }))
                 .onFailure(this::handleRequestBodyError);
     }