[Bug] Placeholder doesn't display whitespaces

Reproducible in vscode.dev or in VS Code Desktop?

• Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• Not reproducible in the monaco editor playground

Monaco Editor Playground Link

https://microsoft.github.io/monaco-editor/playground.html?source=v0.51.0-rc3#XQAAAAJrAQAAAAAAAABBqQkHQ5NjdMjwa-jY7SIQ9S7DNlzs5W-mwj0fe1ZCDRFc9ws9XQE0SJE1jc2VKxhaLFIw9vEWSxW3yscwzcqiW_1uhs0-3YGTBOsVJ4S4FwfCDQb5-2uUHXTVAefbVSd9IzaZ_vv9VR9KugsKimARHSWlrTPOQHROITHxmAetfeRrm3VHdSe7_Etv6WpgzlH4vE8EOEEwk8H8IFxSmzgqwKQpjOsq0VT9OkSPNBU_af_MQo3128-5xBdX2FQesVrxFyKhiY0ZA2W4TXnVmqpqPvxJJYtioxwHrgSXJT1rfncR_EOpciKnCmE4R9ASUJPJ0uTqqD0ZWkK9-HadWyUxsA0eTSATGuR1TkAtY5PxnB1I8xb6VVXe5jTQi05wpe21Lv_gsiN6

Monaco Editor Playground Code

const value = /* set from `myEditor.getModel()`: */ `function hello() {
	alert('Hello world!');
}`;

// Hover on each property to see its docs!
const myEditor = monaco.editor.create(document.getElementById("container"), {
	placeholder: value,
	language: "javascript",
	automaticLayout: true,
});

Reproduction Steps

No response

Actual (Problematic) Behavior

The second line of the placeholder is aligned to the left

Expected Behavior

The code should be properly formatted

Additional Context

No response

Open the linked Monaco Editor Playground and run the supplied TypeScript example to reproduce the placeholder alignment problem. Trace the placeholder rendering behavior from the playground setup; done means whitespace and indentation in the multiline placeholder are preserved so the second line is properly aligned.