Fix missing init_tensorizers arg (#893)

Summary:
Pull Request resolved: #893

init_tensorizers arg was added in D16533827, this diff ensures every subclass of Data class has it in from_config method

Reviewed By: seayoung1112

Differential Revision: D16752097

fbshipit-source-id: ef63ed496cd426012d6e9ba4dc23676ce2a8530a

Author: geof90

pytext/data/disjoint_multitask_data.py

@@ -43,6 +43,7 @@ def from_config(
         task_key: str = BatchContext.TASK_NAME,
         rank=0,
         world_size=1,
+        init_tensorizers=True,
     ):
         samplers = {
             Stage.TRAIN: create_component(ComponentType.BATCH_SAMPLER, config.sampler),