fix: update package.json scripts to use cross-env for env variable mgmt (#5087)

## 📝 Summary

Fix `make-fe` failing in Windows by adding `cross-env` to remaining npm
scripts that use env variables.

Builds on #3242 which initially added `cross-env` but missed some
scripts.

## 🔍 Description of Changes

The `make fe` command was failing on Windows because several npm scripts
in `frontend/package.json` were using Unix-style environment variable
syntax (e.g., `NODE_OPTIONS=--max-old-space-size=4096`) which isn't
recognized by Windows PowerShell/CMD.

Added `cross-env` prefix to all remaining scripts that set environment
variables:
The `cross-env` package was already installed as a dev dependency from
#3242, so no additional dependencies needed.


## 📋 Checklist

- [x] I have read the [contributor
guidelines](https://github.com/marimo-team/marimo/blob/main/CONTRIBUTING.md).
- [ ] For large changes, or changes that affect the public API: this
change was discussed or approved through an issue, on
[Discord](https://marimo.io/discord?ref=pr), or the community
[discussions](https://github.com/marimo-team/marimo/discussions) (Please
provide a link if applicable).
- [ ] I have added tests for the changes made.
- [x] I have run the code and verified that it works as expected.

## 📜 Reviewers

@akshayka OR @mscolnick

Signed-off-by: Srihari Thyagarajan <[email protected]>

Author: Haleshot

frontend/package.json

@@ -157,22 +157,22 @@
   },
   "scripts": {
     "preinstall": "npx only-allow pnpm",
-    "ci": "CI=true run-s lint typecheck test build",
+    "ci": "cross-env CI=true run-s lint typecheck test build",
     "start": "vite",
     "dev": "vite",
     "build:watch": "vite build --watch --outDir ../marimo/_static",
-    "build": "NODE_OPTIONS=--max-old-space-size=4096 vite build",
+    "build": "cross-env NODE_OPTIONS=--max-old-space-size=4096 vite build",
     "test": "vitest",
     "typecheck": "tsc --noEmit",
     "lint": "run-s lint:eslint lint:stylelint lint:biome format",
     "lint:biome": "biome lint --diagnostic-level=warn --write .",
-    "lint:eslint": "TIMING=1 eslint src e2e-tests --fix",
+    "lint:eslint": "cross-env TIMING=1 eslint src e2e-tests --fix",
     "lint:stylelint": "stylelint src/**/*.css --fix",
     "format": "biome format --write .",
     "preview": "vite preview",
     "dev:islands": "cross-env VITE_MARIMO_ISLANDS=true vite --config islands/vite.config.mts",
-    "build:islands": "VITE_MARIMO_ISLANDS=true vite --config islands/vite.config.mts build",
-    "preview:islands": "VITE_MARIMO_VERSION='0.4.6' VITE_MARIMO_ISLANDS=true vite --config islands/vite.config.mts build",
+    "build:islands": "cross-env VITE_MARIMO_ISLANDS=true vite --config islands/vite.config.mts build",
+    "preview:islands": "cross-env VITE_MARIMO_VERSION='0.4.6' VITE_MARIMO_ISLANDS=true vite --config islands/vite.config.mts build",
     "storybook": "storybook dev -p 6006",
     "build-storybook": "storybook build"
   },