feat(ui): node text areas resizable

There's a reactflow issue that prevents the size from being applied when a workflow is loaded, but at least you can resize the fields.

Author: psychedelicious

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/StringField/StringFieldTextarea.tsx

@@ -15,7 +15,6 @@ export const StringFieldTextarea = memo(
         value={value}
         onChange={onChange}
         h="full"
-        resize="none"
         fontSize="sm"
         p={2}
       />