Fix formatting of number 0 in remote object when description is not set

[Beanyy]

Fix for issue reported here: #1967

Some Javascript Debuggee CDP implementations (Hermes) return the a RemoteObject of type=number , value=0 and the description and unserializableValue fields unset. This causes RemoteObjects with type=number and value=0 to be rendered as NaN due to the logic of formatting numbers here:

vscode-js-debug/src/adapter/objectPreview/index.ts

Lines 477 to 484 in 35c4aea

	if (param.type === 'number') {
	if ('unserializableValue' in param) {
	return param.unserializableValue;
	}
	const value = param.value || +param.description;
	return format?.hex ? value.toString(16) : String(value);
	}

[Connor Peet (connor4312)]

Don't worry about the test failures, those are some known flakes I need to fix