feat(react): use vite and vitest rather than react-scripts (#376)

react-scripts (the build system stamped out by create-react-app aka CRA)
is no longer recommended by
https://react.dev/learn/start-a-new-react-project and instead developers
are encouraged to use 'a framework'.
In the "Can I use React without a framework?" section, they suggest
rolling up your sleeves and just use a bundler like Vite - that's what
we do here.

This PR mostly prepared just by following public guides, such as 

https://dev.to/henriquejensen/migrating-from-create-react-app-to-vite-a-quick-and-easy-guide-5e72

Note that vitest just hit 1.0 three days ago (as of this writing) so
it's good timing for us to demonstrate adoption. We got some confidence
in this recommendation since Sourcegraph recently did it:
https://github.com/sourcegraph/sourcegraph/pull/57886

frontend/MODULE.bazel

@@ -1,7 +1,7 @@
 "Bazel module dependencies, see https://bazel.build/external/overview#bzlmod"
 
 bazel_dep(name = "aspect_bazel_lib", version = "1.33.0")
-bazel_dep(name = "aspect_rules_lint", version = "0.6.1")
+bazel_dep(name = "aspect_rules_lint", version = "0.7.0")
 bazel_dep(name = "aspect_rules_jest", version = "0.19.6")
 bazel_dep(name = "aspect_rules_js", version = "1.32.2")
 bazel_dep(name = "aspect_rules_swc", version = "1.0.2")
@@ -10,24 +10,12 @@ bazel_dep(name = "aspect_rules_rollup", version = "1.0.0")
 bazel_dep(name = "aspect_rules_webpack", version = "0.13.0")
 bazel_dep(name = "bazel_skylib", version = "1.4.2")
 
-git_override(
-    module_name = "aspect_rules_lint",
-    commit = "270a3ea55ba4ee75f8fe15636c053c1cc7941e41",
-    remote = "https://github.com/aspect-build/rules_lint",
-)
-
-pnpm = use_extension("@aspect_rules_js//npm:extensions.bzl", "pnpm")
+pnpm = use_extension("@aspect_rules_js//npm:extensions.bzl", "pnpm", dev_dependency = True)
 use_repo(pnpm, "pnpm")
 
 npm = use_extension("@aspect_rules_js//npm:extensions.bzl", "npm", dev_dependency = True)
 npm.npm_translate_lock(
     name = "npm",
-    bins = {
-        # derived from "bin" attribute in node_modules/react-scripts/package.json
-        "react-scripts": [
-            "react-scripts=./bin/react-scripts.js",
-        ],
-    },
     npmrc = "//:.npmrc",
     pnpm_lock = "//:pnpm-lock.yaml",
     public_hoist_packages = {