[Bug] Python syntax highlighting does not support underscores in numeric literals

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=v0.52.0#XQAAAAKnAQAAAAAAAABBqQkHQ5NjdMjwa-jY7SIQ9S7DNlzs5W-mwj0fe1ZCDRFc9ws9XQE0SJE1jc2VKxhaLFIw9vEWSxW3yscwzyNqXz8HGcRM7llq60Xf2dFVQaKGLkRsRu_z2ZE0NWgzCg62BuIVYtanb18eMNBNJsjVjyiYVHIbaAyf-nA4BerZWoQmUlMw-vMw3l1KEgsDwXUkFxkTWBpnTf4yO_qcZeejWbg2ck2NXeVHUfoPmtoeVUkxzH0S2hd6vksr2ua8lr3VCFo3Yjoss8fLIqw0VMhVOL7PYm9fvVPtU3Kp0tpUzhjV_E85CtmMO5xILERoMbp6yNzxyCG8Ko0RhRkKQXkyVZetsnXkCKUU3yPbfu2U53W0MZbSao9Fwac1gbpMNNwYku2aST_QKM_P5J7WkQlWVUDY5ErzL3oG58Eu_Jz-gOHa2geOwo_Mop__-LpYMQ

Monaco Editor Playground Code

const value = /* set from `myEditor.getModel()`: */ `# '100_000' should be formatted as a single value per https://peps.python.org/pep-0515/
numeric_literal_example = 100_000`;

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

Reproduction Steps

Open the playground link. Verify that 100_000 is formatted inconsistently.

Actual (Problematic) Behavior

Numeric literals with underscores are not highlighted as a single value by the syntax highlighter.

Expected Behavior

Numeric literals with underscores should be highlighted as a single value, as is done in VS Code.

Additional Context

Numeric literals with underscores were proposed in https://peps.python.org/pep-0515/ and have been supported since Python 3.6.

Start with the linked Monaco Editor Playground and reproduce the Python example containing 100_000. Locate the Python syntax-highlighting definition used by Monaco and compare its behavior with the expected VS Code highlighting. Done means the numeric literal is highlighted as one value while existing Python highlighting remains unchanged.