fix(keys): escape closes palette and cheatsheet, page keys stay quiet behind a modal

src/lib/components/shell/Shell.svelte

@@ -140,6 +140,11 @@
       keys: "Escape",
       label: "Leave field",
       run: (event) => {
+        if (ui.palette || keys.sheetOpen) {
+          ui.palette = false;
+          keys.sheetOpen = false;
+          return;
+        }
         if (isEditable(event.target)) {
           (event.target as HTMLElement).blur();
         }