fix(bundling): do not normalize tsconfig path for Windows with rollup (#30567)

## Current Behavior
Rollup build fails on Windows with errors like this:
```
[plugin rpt2] error TS6059: File '/foo/bar/baz.ts' is not under 'rootDir' 'C:/foo/bar'. 'rootDir' is expected to contain all source files.
```

This is because since
81fe7bb278
the `tsconfig` path passed to `rollup-plugin-typescript2` is built using
`joinPathFragments`, which removes the drive letter on Windows.

## Expected Behavior
Rollup build should not fail.

packages/rollup/src/plugins/with-nx/with-nx.ts

@@ -5,7 +5,6 @@ import * as rollup from 'rollup';
 import { getBabelInputPlugin } from '@rollup/plugin-babel';
 import * as autoprefixer from 'autoprefixer';
 import {
-  joinPathFragments,
   logger,
   type ProjectGraph,
   readCachedProjectGraph,
@@ -83,7 +82,7 @@ export function withNx(
 
   const tsConfigPath =
     options.buildLibsFromSource || global.NX_GRAPH_CREATION
-      ? joinPathFragments(workspaceRoot, options.tsConfig)
+      ? join(workspaceRoot, options.tsConfig)
       : createTmpTsConfig(
           options.tsConfig,
           workspaceRoot,