Rename call sites from tff.program.X to `federated_language.program…

….X` in `//third_party/py/dataset_grouper/...`.

For each

* FederatedDataSource
* FederatedDataSourceIterator
* check_in_federated_context
* ComputationArg
* contains_only_server_placed_data
* FederatedContext
* LoggingReleaseManager
* MemoryReleaseManager
* ProgramStateExistsError
* ProgramStateManager
* ProgramStateNotFoundError
* ProgramStateStructure
* ProgramStateValue
* DelayedReleaseManager
* FilteringReleaseManager
* GroupingReleaseManager
* NotFilterableError
* PeriodicReleaseManager
* ReleasableStructure
* ReleasableValue
* ReleaseManager
* MaterializableStructure
* MaterializableTypeSignature
* MaterializableValue
* MaterializableValueReference
* materialize_value
* MaterializedStructure
* MaterializedValue

See:

* google-parfait/federated-language@2ec477b
* google-parfait/tensorflow-federated@0ae85a7

for more information.

PiperOrigin-RevId: 705144723

examples/training/train_tff.py

@@ -19,6 +19,7 @@
 from absl import flags
 from absl import logging
 import dataset_grouper as dsgp
+import federated_language
 import tensorflow as tf
 import tensorflow_datasets as tfds
 import tensorflow_federated as tff
@@ -188,7 +189,7 @@ def training_selection_fn(round_num: int) -> list[tf.data.Dataset]:
       training_process=learning_process,
       training_selection_fn=training_selection_fn,
       total_rounds=_TOTAL_ROUNDS.value,
-      metrics_managers=[tff.program.LoggingReleaseManager()],
+      metrics_managers=[federated_language.program.LoggingReleaseManager()],
   )