Revert breaking change in configure_optimizers return type (#20512)

Author: lantiga

docs/source-pytorch/conf.py

@@ -464,8 +464,8 @@ def _load_py_module(name: str, location: str) -> ModuleType:
     ("py:func", "lightning.pytorch.utilities.rank_zero.rank_zero_only"),
     ("py:class", "lightning.pytorch.utilities.types.LRSchedulerConfig"),
     ("py:class", "lightning.pytorch.utilities.types.LRSchedulerConfigType"),
-    ("py:class", "lightning.pytorch.utilities.types.OptimizerConfigType"),
-    ("py:class", "lightning.pytorch.utilities.types.OptimizerLRSchedulerConfigType"),
+    ("py:class", "lightning.pytorch.utilities.types.OptimizerConfig"),
+    ("py:class", "lightning.pytorch.utilities.types.OptimizerLRSchedulerConfig"),
     ("py:class", "lightning_habana.pytorch.plugins.precision.HPUPrecisionPlugin"),
     ("py:class", "lightning_habana.pytorch.strategies.HPUDDPStrategy"),
     ("py:class", "lightning_habana.pytorch.strategies.HPUParallelStrategy"),

src/lightning/pytorch/utilities/types.py

@@ -104,11 +104,11 @@ class LRSchedulerConfigType(TypedDict, total=False):
     strict: bool
 
 
-class OptimizerConfigType(TypedDict):
+class OptimizerConfig(TypedDict):
     optimizer: Optimizer
 
 
-class OptimizerLRSchedulerConfigType(TypedDict):
+class OptimizerLRSchedulerConfig(TypedDict):
     optimizer: Optimizer
     lr_scheduler: Union[LRSchedulerTypeUnion, LRSchedulerConfigType]
     monitor: NotRequired[str]
@@ -119,10 +119,10 @@ class OptimizerLRSchedulerConfigType(TypedDict):
         Optimizer,
         Sequence[Optimizer],
         tuple[Sequence[Optimizer], Sequence[Union[LRSchedulerTypeUnion, LRSchedulerConfig]]],
-        OptimizerConfigType,
-        OptimizerLRSchedulerConfigType,
-        Sequence[OptimizerConfigType],
-        Sequence[OptimizerLRSchedulerConfigType],
+        OptimizerConfig,
+        OptimizerLRSchedulerConfig,
+        Sequence[OptimizerConfig],
+        Sequence[OptimizerLRSchedulerConfig],
     ]
 ]