Remove divider in QueryBuild/ViewHeader when it's not needed (#36128)

frontend/src/metabase/query_builder/components/QuestionActions.styled.tsx

@@ -7,6 +7,10 @@ export const QuestionActionsDivider = styled.div`
   margin-left: 0.5rem;
   margin-right: 0.5rem;
   height: 1.25rem;
+
+  &:first-child {
+    display: none;
+  }
 `;
 
 export const StrengthIndicator = styled(DatasetMetadataStrengthIndicator)`

frontend/src/metabase/query_builder/components/view/ViewHeader.jsx

@@ -502,7 +502,6 @@ function ViewTitleHeaderRightSide(props) {
           />
         </ViewHeaderIconButtonContainer>
       )}
-      {/* TODO(oleggromov) remove divider when nothing else is shown to the left */}
       {isSaved && (
         <QuestionActions
           isShowingQuestionInfoSidebar={isShowingQuestionInfoSidebar}