[Common] Fix StringCastUtils generic cast and restore Flink build log level

Accept Class<?> in cast() so common_2.12 compiles with ConfigOption callers, and keep Flink dependency-merge failures logged at error while Spark stays at warn.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: shangeyao

streampark-common/src/main/java/org/apache/streampark/common/util/StringCastUtils.java

@@ -23,8 +23,9 @@ public final class StringCastUtils {
     private StringCastUtils() {
     }
 
-    public static <T> T cast(String v, Class<T> classType) {
-        return classType.cast(parseValue(v, classType));
+    @SuppressWarnings("unchecked")
+    public static <T> T cast(String v, Class<?> classType) {
+        return (T) classType.cast(parseValue(v, classType));
     }
 
     private static Object parseValue(String v, Class<?> classType) {

streampark-console/streampark-console-service/src/main/java/org/apache/streampark/console/core/service/application/impl/FlinkApplicationBuildPipelineServiceImpl.java

@@ -522,6 +522,7 @@ private DependencyInfo getMergedDependencyInfo(FlinkApplication application) {
             application.getTeamResource(),
             application.getTeamId(),
             resourceService,
-            log);
+            log,
+            true);
     }
 }

streampark-console/streampark-console-service/src/main/java/org/apache/streampark/console/core/util/ApplicationBuildPipelineUtils.java

@@ -196,6 +196,16 @@ public static DependencyInfo getMergedDependencyInfo(
                                                          Long teamId,
                                                          ResourceService resourceService,
                                                          Logger log) {
+        return getMergedDependencyInfo(dependencyInfo, teamResource, teamId, resourceService, log, false);
+    }
+
+    public static DependencyInfo getMergedDependencyInfo(
+                                                         DependencyInfo dependencyInfo,
+                                                         String teamResource,
+                                                         Long teamId,
+                                                         ResourceService resourceService,
+                                                         Logger log,
+                                                         boolean errorOnFailure) {
         if (StringUtils.isBlank(teamResource)) {
             return dependencyInfo;
         }
@@ -231,7 +241,11 @@ public static DependencyInfo getMergedDependencyInfo(
                     });
             return dependencyInfo.merge(mvnArtifacts, jarLibs);
         } catch (Exception e) {
-            log.warn("Merge team dependency failed.", e);
+            if (errorOnFailure) {
+                log.error("Merge team dependency failed.", e);
+            } else {
+                log.warn("Merge team dependency failed.", e);
+            }
             return dependencyInfo;
         }
     }