[Look&Feel] Use small context menu across the board (#7486) (#7595)

(cherry picked from commit 61d5c49)

Signed-off-by: Zhongnan Su <[email protected]>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: opensearch-trigger-bot[bot]

src/plugins/home/public/application/components/__snapshots__/sample_data_view_data_button.test.js.snap

@@ -127,7 +127,7 @@ export class SampleDataViewDataButton extends React.Component {
         anchorPosition="downCenter"
         data-test-subj={`launchSampleDataSet${this.props.id}`}
       >
-        <EuiContextMenu initialPanelId={0} panels={panels} />
+        <EuiContextMenu initialPanelId={0} panels={panels} size="s" />
       </EuiPopover>
     );
   }

src/plugins/home/public/application/components/sample_data_view_data_button.js

@@ -93,7 +93,7 @@ function VegaActionsMenu({ formatHJson, formatJson }: VegaActionsMenuProps) {
       panelPaddingSize="none"
       anchorPosition="downLeft"
     >
-      <EuiContextMenuPanel items={items} />
+      <EuiContextMenuPanel items={items} size="s" />
     </EuiPopover>
   );
 }

src/plugins/vis_type_vega/public/components/vega_actions_menu.tsx

@@ -97,7 +97,7 @@ function VegaHelpMenu() {
       panelPaddingSize="none"
       anchorPosition="downLeft"
     >
-      <EuiContextMenuPanel items={items} />
+      <EuiContextMenuPanel items={items} size="s" />
     </EuiPopover>
   );
 }