Fix width of save button in cache sidebar (#43755)

enterprise/frontend/src/metabase-enterprise/caching/components/SidebarCacheForm.styled.tsx

@@ -14,7 +14,4 @@ export const SidebarCacheFormBody = styled(Group)`
   .strategy-form-box {
     border-bottom: 0 !important;
   }
-  .strategy-form-submit-button {
-    flex-grow: 1;
-  }
 `;

enterprise/frontend/src/metabase-enterprise/caching/components/SidebarCacheForm.tsx

@@ -89,6 +89,7 @@ const SidebarCacheForm_Base = ({
           shouldShowName={false}
           onReset={closeSidebar}
           buttonLabels={{ save: t`Save`, discard: t`Cancel` }}
+          isInSidebar
         />
       </DelayedLoadingAndErrorWrapper>
       {confirmationModal}