Import from the leaf module

To avoid circular dependencies, it is always better to import symbols
from the leaf module internally.

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

src/frequenz/sdk/timeseries/grid.py

@@ -17,7 +17,7 @@
 from frequenz.client.microgrid._component import ComponentCategory
 
 from ..microgrid import connection_manager
-from . import Fuse
+from ._fuse import Fuse
 from ._quantities import Current, Power
 from .formula_engine import FormulaEngine, FormulaEngine3Phase
 from .formula_engine._formula_engine_pool import FormulaEnginePool