Update compass-schema to LG Modal v20

Author: kraenhansen

packages/compass-schema/src/components/export-schema-legacy-modal.tsx

@@ -500,7 +500,7 @@ const ExportSchemaLegacyModal: React.FunctionComponent<{
     setShowLegacyExportTooltip,
   ]);
   return (
-    <Modal open={isOpen} setOpen={onClose} contentClassName={containerStyles}>
+    <Modal open={isOpen} setOpen={onClose} className={containerStyles}>
       <ModalHeader
         title={
           <>

packages/compass-schema/src/components/export-schema-modal.tsx

@@ -149,7 +149,7 @@ const ExportSchemaModal: React.FunctionComponent<{
   );
 
   return (
-    <Modal open={isOpen} setOpen={onClose} contentClassName={modalStyles}>
+    <Modal open={isOpen} setOpen={onClose} className={modalStyles}>
       <ModalHeader title="Export JSON Schema" />
       <ModalBody>
         <Label