Only set quarkus.http.host as a default if not available

(cherry picked from commit 917178f)

extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/VertxConfigBuilder.java

@@ -1,11 +1,37 @@
 package io.quarkus.vertx.http.runtime;
 
+import io.quarkus.runtime.LaunchMode;
 import io.quarkus.runtime.configuration.ConfigBuilder;
 import io.smallrye.config.SmallRyeConfigBuilder;
 
 public class VertxConfigBuilder implements ConfigBuilder {
+    private static final String QUARKUS_HTTP_HOST = "quarkus.http.host";
+    private static final String ALL_INTERFACES = "0.0.0.0";
+
     @Override
     public SmallRyeConfigBuilder configBuilder(final SmallRyeConfigBuilder builder) {
-        return builder.withSources(new HttpHostConfigSource());
+        // It may have been recorded, so only set if it not available in the defaults
+        if (builder.getDefaultValues().get(QUARKUS_HTTP_HOST) == null) {
+            // Sets the default host config value, depending on the launch mode
+            if (LaunchMode.isRemoteDev()) {
+                // in remote-dev mode we need to listen on all interfaces
+                builder.withDefaultValue(QUARKUS_HTTP_HOST, ALL_INTERFACES);
+            } else {
+                // In dev-mode we want to only listen on localhost so others on the network cannot connect to the application.
+                // However, in WSL this would result in the application not being accessible,
+                // so in that case, we launch it on all interfaces.
+                builder.withDefaultValue(QUARKUS_HTTP_HOST,
+                        (LaunchMode.current().isDevOrTest() && !isWSL()) ? "localhost" : ALL_INTERFACES);
+            }
+        }
+        return builder;
+    }
+
+    /**
+     * @return {@code true} if the application is running in a WSL (Windows Subsystem for Linux) environment
+     */
+    private boolean isWSL() {
+        var sysEnv = System.getenv();
+        return sysEnv.containsKey("IS_WSL") || sysEnv.containsKey("WSL_DISTRO_NAME");
     }
 }