chore: make some neetpick

Signed-off-by: Manish Dait <daitmanish88@gmail.com>

Author: manishdait

src/hiero_sdk_python/consensus/topic_message_submit_transaction.py

@@ -4,6 +4,7 @@
 from typing import Literal, overload
 
 from hiero_sdk_python.channels import _Channel
+from typing import List, Literal, Optional, overload
 from hiero_sdk_python.client.client import Client
 from hiero_sdk_python.consensus.topic_id import TopicId
 from hiero_sdk_python.crypto.private_key import PrivateKey
@@ -405,10 +406,8 @@ def sign(self, private_key: PrivateKey):
         return self
 
     @property
-    def body_size_all_chunks(self) -> List[int]:
-        """
-        Returns an array of body sizes for transactions with multiple chunks.
-        """
+    def body_size_all_chunks(self) -> list[int]:
+        """Returns an array of body sizes for transactions with multiple chunks."""
         self._require_frozen()
         sizes = []
 

src/hiero_sdk_python/file/file_append_transaction.py

@@ -16,6 +16,7 @@
 import math
 from typing import TYPE_CHECKING, Any, Literal, overload
 
+from typing import TYPE_CHECKING, Any, List, Literal, Optional, overload
 from hiero_sdk_python.file.file_id import FileId
 from hiero_sdk_python.hapi.services import file_append_pb2, timestamp_pb2
 from hiero_sdk_python.hapi.services.schedulable_transaction_body_pb2 import (
@@ -32,6 +33,7 @@
     from hiero_sdk_python.client import Client
     from hiero_sdk_python.crypto.private_key import PrivateKey
 
+    from hiero_sdk_python.channels import _Channel
     from hiero_sdk_python.executable import _Method
     from hiero_sdk_python.transaction.transaction import TransactionReceipt
     from hiero_sdk_python.transaction.transaction_response import TransactionResponse
@@ -476,10 +478,8 @@ def sign(self, private_key: PrivateKey) -> FileAppendTransaction:
 
 
     @property
-    def body_size_all_chunks(self) -> List[int]:
-        """
-        Returns an array of body sizes for transactions with multiple chunks.
-        """
+    def body_size_all_chunks(self) -> list[int]:
+        """Returns an array of body sizes for transactions with multiple chunks."""
         self._require_frozen()
         sizes = []