[@rollup/plugin-typescript]: Source-map source paths break if "sourceRoot" is specified

[Haringat]

• Rollup Plugin Name: Typescript
• Rollup Plugin Version: 12.3.0
• Rollup Version: 4.53.3
• Operating System (or Browser): Archlinux kernel 6.17.9
• Node Version: 22.21.1
• Link to reproduction (⚠️ read below): https://stackblitz.com/edit/rollup-repro-sxnmzqs2?file=tsconfig.json

Expected Behavior

Each path reference inside the source map leads to a source file inside the source root.

Actual Behavior

The paths are invalid if a source root is specified and repeat the path to the source file after the path to the directory containing the source file (see dist/index.js.map inside the stackblitz)

Additional Information

If the sourceRoot option is removed from the compilerOptions, it works as expected.