Skip sliding window tests on samza and spark runner test suites (#35430)

* Skip sliding_windows test on samza and spark runner.

* Trigger tests.

Author: shunping

.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Samza.json

@@ -1,3 +1,4 @@
 {
-  "https://github.com/apache/beam/pull/34830": "testing"
+  "https://github.com/apache/beam/pull/34830": "testing",
+  "https://github.com/apache/beam/issues/35429": "testing"
 }

.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Spark.json

@@ -1,3 +1,4 @@
 {
-  "https://github.com/apache/beam/pull/34830": "testing"
+  "https://github.com/apache/beam/pull/34830": "testing",
+  "https://github.com/apache/beam/issues/35429": "testing"
 }

sdks/python/apache_beam/runners/portability/samza_runner_test.py

@@ -190,6 +190,9 @@ def test_custom_window_type(self):
   def test_reshuffle_after_custom_window(self):
     raise unittest.SkipTest("https://github.com/apache/beam/issues/34831")
 
+  def test_sliding_windows(self):
+    raise unittest.SkipTest("https://github.com/apache/beam/issues/35429")
+
 
 if __name__ == '__main__':
   # Run the tests.

sdks/python/apache_beam/runners/portability/spark_runner_test.py

@@ -191,6 +191,9 @@ def test_custom_merging_window(self):
   def test_custom_window_type(self):
     raise unittest.SkipTest("https://github.com/apache/beam/issues/20641")
 
+  def test_sliding_windows(self):
+    raise unittest.SkipTest("https://github.com/apache/beam/issues/35429")
+
   # Inherits all other tests from PortableRunnerTest.