refactor(gax-httpjson): remove pqcNamedGroupsSupported flag and pass exception directly to log

Author: lqiu96

sdk-platform-java/gax-java/gax-httpjson/src/main/java/com/google/api/gax/httpjson/HttpJsonTransportUtils.java

@@ -69,12 +69,6 @@ public class HttpJsonTransportUtils {
    * ensuring that setting Conscrypt as the default security provider does not cause breaking
    * failures for customers running on environments where Conscrypt is unsupported or unavailable.
    */
-  /**
-   * Tracks whether Conscrypt supports PQC named groups. If configuration fails once, this is set to
-   * false so subsequent socket connection attempts skip calling Conscrypt.setNamedGroups.
-   */
-  private static volatile boolean pqcNamedGroupsSupported = true;
-
   private static class ConscryptProviderHolder {
     private static final Provider INSTANCE = createProvider();
 
@@ -107,7 +101,7 @@ public static NetHttpTransport.Builder configureConscryptSecurityProvider(
         .setSecurityProvider(conscryptProvider)
         .setSslSocketConfigurator(
             socket -> {
-              if (!pqcNamedGroupsSupported || !Conscrypt.isConscrypt(socket)) {
+              if (!Conscrypt.isConscrypt(socket)) {
                 return;
               }
               try {
@@ -117,15 +111,10 @@ public static NetHttpTransport.Builder configureConscryptSecurityProvider(
                 // ConscryptProviderHolder initialization. Catching Exception here safely
                 // intercepts runtime socket configuration errors (e.g. unsupported groups or
                 // closed socket) without swallowing JVM errors like OutOfMemoryError.
-                pqcNamedGroupsSupported = false;
                 LOG.log(
                     Level.WARNING,
-                    "Failed to set PQC named groups on Conscrypt socket ("
-                        + e.getClass().getName()
-                        + ": "
-                        + e.getMessage()
-                        + "). Disabling PQC named groups and falling back to Conscrypt default TLS"
-                        + " groups.",
+                    "Failed to set PQC named groups on Conscrypt socket. Falling back to Conscrypt"
+                        + " default TLS groups.",
                     e);
               }
             });