client/web: update vite-plugin-svgr to latest version (#11197)

Update vite-plugin-svgr to the latest version (4.2.0) ahead of updating
vite to 5.x. This is a major version bump from our previous 3.x, and
requires changing the import paths used for SVGs.

Updates https://github.com/tailscale/corp/issues/17715

Signed-off-by: Mario Minardi <mario@tailscale.com>

client/web/src/ui/dialog.tsx

@@ -4,7 +4,7 @@
 import * as DialogPrimitive from "@radix-ui/react-dialog"
 import cx from "classnames"
 import React, { Component, ComponentProps, FormEvent } from "react"
-import { ReactComponent as X } from "src/assets/icons/x.svg"
+import X from "src/assets/icons/x.svg?react"
 import Button from "src/ui/button"
 import PortalContainerContext from "src/ui/portal-container-context"
 import { isObject } from "src/utils/util"