fix(tanstackstart-react): remove misleading workerd/worker export conditions (#20038)

The `workerd` and `worker` export conditions in `package.json` both resolve
to `index.server.js`, which re-exports `@sentry/node`. This falsely signals
Cloudflare Workers compatibility — bundlers targeting Workers resolve the
`workerd` condition and pull the full `@sentry/node` dependency tree
(including OpenTelemetry, undici, and `node:*` built-ins) into the Worker
bundle, causing silent module evaluation failure at runtime.

Remove these conditions so that Workers bundlers fall through to `browser`
(which resolves to `index.client.js` / `@sentry/browser`). This is a
packaging stopgap — proper Workers support would require a dedicated entry
using `@sentry/cloudflare`, tracked in #18669.

Author: jmalmo

packages/tanstackstart-react/package.json

@@ -19,14 +19,6 @@
     "./package.json": "./package.json",
     ".": {
       "types": "./build/types/index.types.d.ts",
-      "workerd": {
-        "import": "./build/esm/index.server.js",
-        "require": "./build/cjs/index.server.js"
-      },
-      "worker": {
-        "import": "./build/esm/index.server.js",
-        "require": "./build/cjs/index.server.js"
-      },
       "browser": {
         "import": "./build/esm/index.client.js",
         "require": "./build/cjs/index.client.js"