chore: revert formatting changes to __init__.pyi

Author: qzyu999

bindings/python/fluss/__init__.pyi

@@ -125,9 +125,7 @@ class ScanRecords:
     def __getitem__(self, index: slice) -> List[ScanRecord]: ...
     @overload
     def __getitem__(self, bucket: TableBucket) -> List[ScanRecord]: ...
-    def __getitem__(
-        self, key: Union[int, slice, TableBucket]
-    ) -> Union[ScanRecord, List[ScanRecord]]: ...
+    def __getitem__(self, key: Union[int, slice, TableBucket]) -> Union[ScanRecord, List[ScanRecord]]: ...
     def __contains__(self, bucket: TableBucket) -> bool: ...
     def __iter__(self) -> Iterator[ScanRecord]: ...
     def __str__(self) -> str: ...
@@ -371,6 +369,7 @@ class FlussAdmin:
         ...
     def __repr__(self) -> str: ...
 
+
 class DatabaseDescriptor:
     """Descriptor for a Fluss database (comment and custom properties)."""
 
@@ -384,6 +383,7 @@ class DatabaseDescriptor:
     def get_custom_properties(self) -> Dict[str, str]: ...
     def __repr__(self) -> str: ...
 
+
 class DatabaseInfo:
     """Information about a Fluss database."""
 
@@ -604,6 +604,7 @@ class UpsertWriter:
         ...
     def __repr__(self) -> str: ...
 
+
 class WriteResultHandle:
     """Handle for a pending write (append/upsert/delete). Ignore for fire-and-forget, or await handle.wait() for ack."""
 
@@ -612,6 +613,7 @@ class WriteResultHandle:
         ...
     def __repr__(self) -> str: ...
 
+
 class Lookuper:
     """Lookuper for performing primary key lookups on a Fluss table."""