fix(VariantManagement): fix type extraction for button click handler (#5095)

Fixes #5072

Author: MarcusNotheis

packages/main/src/components/VariantManagement/index.tsx

@@ -158,14 +158,14 @@ export interface VariantManagementPropTypes extends Omit<CommonProps, 'onSelect'
    *
    * __Note:__ Calling `event.preventDefault()` prevents the dialog from closing when clicked.
    */
-  onSaveAs?: (e: Parameters<ButtonPropTypes['onClick']>[0] & { detail: SelectedVariant }) => void;
+  onSaveAs?: (e: Parameters<NonNullable<ButtonPropTypes['onClick']>>[0] & { detail: SelectedVariant }) => void;
   /**
    * The event is fired when the "Save" button is clicked inside the Manage Views dialog.
    *
    * __Note:__ Calling `event.preventDefault()` prevents the dialog from closing when clicked.
    */
   onSaveManageViews?: (
-    e: Parameters<ButtonPropTypes['onClick']>[0] & {
+    e: Parameters<NonNullable<ButtonPropTypes['onClick']>>[0] & {
       detail: {
         deletedVariants: VariantItemPropTypes[];
         prevVariants: VariantItemPropTypes[];
@@ -179,7 +179,7 @@ export interface VariantManagementPropTypes extends Omit<CommonProps, 'onSelect'
    *
    * __Note:__ The save button is only displayed if the `VariantManagement` is in `dirtyState` and the selected variant is not in `readOnly` mode.
    */
-  onSave?: (e: Parameters<ButtonPropTypes['onClick']>[0] & { detail: SelectedVariant }) => void;
+  onSave?: (e: Parameters<NonNullable<ButtonPropTypes['onClick']>>[0] & { detail: SelectedVariant }) => void;
 }
 
 const styles = {