Move LegacyOption back to shared_legacy.py

Seems like Python doesn't actually consider it a circular import in this instance.

modules/options.py

@@ -7,6 +7,7 @@ from installer import log
 if TYPE_CHECKING:
     from collections.abc import Callable
     from gradio.components import Component
+    from modules.shared_legacy import LegacyOption
     from modules.ui_components import DropdownEditable
 
 
@@ -117,11 +118,6 @@ class OptionInfo:
         return f'OptionInfo: label="{self.label}" section="{self.section}" component="{self.component}" default="{self.default}" refresh="{self.refresh is not None}" change="{self.onchange is not None}" args={args} choices={choices}'
 
 
-class LegacyOption(OptionInfo):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-
-
 @dataclass
 class OptionsCategory:
     id: str

modules/shared_legacy.py

@@ -1,7 +1,12 @@
 import os
 import gradio as gr
 from modules import paths
-from modules.options import LegacyOption, options_section
+from modules.options import OptionInfo, options_section
+
+
+class LegacyOption(OptionInfo):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
 
 
 legacy_options = options_section(('legacy_options', "Legacy options"), {