fix(launch_bar): some context menus intercepted by browser

apps/client/src/widgets/launch_bar/GenericButtons.tsx

@@ -32,6 +32,9 @@ export function CustomNoteLauncher(props: {
             onClick={launch}
             onAuxClick={launch}
             onContextMenu={async evt => {
+                // Must preventDefault synchronously — awaiting getTargetNoteId first would let the
+                // native browser context menu open before showLauncherContextMenu gets a chance to.
+                evt.preventDefault();
                 const targetNoteId = await getTargetNoteId(launcherNote);
                 const hoistedNoteId = getHoistedNoteId?.(launcherNote) ?? null;
                 const linkItems = targetNoteId ? link_context_menu.getItems(evt) : [];

apps/client/src/widgets/launch_bar/HistoryNavigation.tsx

@@ -27,6 +27,8 @@ export default function HistoryNavigationButton({ launcherNote, command }: Histo
             text={title}
             triggerCommand={command}
             onContextMenu={async (e) => {
+                // Prevent the native menu synchronously before awaiting history items.
+                e.preventDefault();
                 const items = webContents ? await getHistoryItems(webContents) : [];
                 showLauncherContextMenu<string>(launcherNote, e, {
                     extraItems: items,