[Bug]: `Symbol.toStringTag` not present for self imported namespaces even if `output.generatedCode.symbol: true`

### Reproduction link or steps

[REPL](https://repl.rolldown.rs/#eNptjrsOwjAMRX/F8sJDKOxZ+QQYWQpxo6LURonLQ1X+naSoogOTfW3f6zNii3bEjh29zC3VntH+9A6vVfZ3iQpbaBJwgjZKDyuzn69W53jmq3CSQCaIXx/f/UWCUTlq7NifGg8dF+emHpZMQqtxoLzDKCE4ebIp9rbzC4Q/my8MvSYYR20zBIWxZgLIoPdB7SwBPDHFRskdxNFiDpAmOgsVYZ7mbzOVjLmQPcqrUPxJMX8AK4JjhQ==)

### What is expected?

Running the bundled code outputs true.

### What is actually happening?

Running the bundled code outputs false.

### System Info

```Shell
REPL 1.0.0-beta.51
```

### Any additional comments?

Rollup supports this correctly ([Rollup REPL](https://rollupjs.org/repl/?version=4.53.3&shareable=eyJleGFtcGxlIjpudWxsLCJtb2R1bGVzIjpbeyJjb2RlIjoiaW1wb3J0ICogYXMgbnMgZnJvbSAnLi9tYWluLmpzJ1xuY29uc29sZS5sb2coU3ltYm9sLnRvU3RyaW5nVGFnIGluIG5zKSIsImlzRW50cnkiOnRydWUsIm5hbWUiOiJtYWluLmpzIn1dLCJvcHRpb25zIjp7Im91dHB1dCI6eyJmb3JtYXQiOiJlcyIsImdlbmVyYXRlZENvZGUiOnsic3ltYm9scyI6dHJ1ZX19fX0=)).

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[Bug]: `Symbol.toStringTag` not present for self imported namespaces even if `output.generatedCode.symbol: true` #7152

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[Bug]: Symbol.toStringTag not present for self imported namespaces even if output.generatedCode.symbol: true #7152

Description

Reproduction link or steps

What is expected?

What is actually happening?

System Info

Any additional comments?

Metadata

Metadata

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[Bug]: `Symbol.toStringTag` not present for self imported namespaces even if `output.generatedCode.symbol: true` #7152