[hotfix] Avoid duplicate call on checkNotNull (#26429)

Author: beliefer

Diff for: flink-clients/src/main/java/org/apache/flink/client/cli/CliFrontend.java

@@ -311,8 +311,7 @@ private <T> Configuration getEffectiveConfiguration(
                 getEffectiveConfiguration(activeCustomCommandLine, commandLine);
 
         final ExecutionConfigAccessor executionParameters =
-                ExecutionConfigAccessor.fromProgramOptions(
-                        checkNotNull(programOptions), checkNotNull(jobJars));
+                ExecutionConfigAccessor.fromProgramOptions(programOptions, jobJars);
 
         executionParameters.applyToConfiguration(effectiveConfiguration);