fix: track zenmode and grid mode usage (#2900)

src/actions/actionToggleGridMode.tsx

 import { register } from "./register";
 import { GRID_SIZE } from "../constants";
 import { AppState } from "../types";
+import { trackEvent } from "../analytics";
 
 export const actionToggleGridMode = register({
   name: "gridMode",
   perform(elements, appState) {
+    trackEvent("view", "mode", "grid");
     return {
       appState: {
         ...appState,

src/actions/actionToggleZenMode.tsx

 import { CODES, KEYS } from "../keys";
 import { register } from "./register";
+import { trackEvent } from "../analytics";
 
 export const actionToggleZenMode = register({
   name: "zenMode",
   perform(elements, appState) {
+    trackEvent("view", "mode", "zen");
+
     return {
       appState: {
         ...appState,