IDEA-CR-56419: PY-34555 Clean module flag for child process

If a process was started with `-m` key (and converted to `--module` flag), this parameter will be passed to all its child processes. So we need to clear this flag in SetupHolder before patching arguments

GitOrigin-RevId: 00ae0b23fc6107bee75272a03a5bd15ca474fbc7

python/helpers/pydev/_pydev_bundle/pydev_monkey.py

@@ -228,6 +228,7 @@ def patch_args(args):
         # ['X:\\pysrc\\pydevd.py', '--multiprocess', '--print-in-debugger-startup',
         #  '--vm_type', 'python', '--client', '127.0.0.1', '--port', '56352', '--file', 'x:\\snippet1.py']
         from _pydevd_bundle.pydevd_command_line_handling import setup_to_argv
+        SetupHolder.setup['module'] = False  # clean module param from parent process
         original = setup_to_argv(SetupHolder.setup) + ['--file']
         while i < len(args):
             if args[i] == '-m':

python/testData/debug/test_subprocess_module.py

@@ -0,0 +1,8 @@
+from __future__ import print_function
+import os
+import subprocess
+import sys
+
+ret = subprocess.call([os.path.abspath(sys.executable), "-m", "test_subprocess"])
+
+print("Module returned code %d" % ret)

python/testSrc/com/jetbrains/env/python/debug/PythonDebuggerMultiprocessingTest.java

@@ -194,4 +194,23 @@ public class PythonDebuggerMultiprocessingTest extends PyEnvTestCase {
       }
     });
   }
+
+  @Test
+  public void testSubprocessModule() {
+    runPythonTest(new PyDebuggerMultiprocessTask("/debug", "test_subprocess_module.py") {
+      @Override
+      public void before() {
+        toggleBreakpoint(getFilePath("test_python_subprocess_another_helper.py"), 2);
+        setWaitForTermination(false);
+      }
+
+      @Override
+      public void testing() throws Exception {
+        waitForPause();
+        eval("x").hasValue("42");
+        resume();
+        waitForOutput("Module returned code 0");
+      }
+    });
+  }
 }