Unmarshal drops lines and does not return error

[jdistler]

Describe the bug
When unmarshalling yaml files with certain kinds of whitespace errors, an error is not returned and all content after the whitespace error is truncated.

To Reproduce

https://go.dev/play/p/WgvHk09B-Px

Expected behavior

The expected behavior is that at err := yaml.Unmarshal(originalData, &content);, we return a non-nil error since we could not parse the entire file.

Screenshots

Let's say we have a yaml file with these contents:

formatVersion: 1
name: some name
description: |
  some description
continuing the description without proper whitespace
system: some system
source: snowflake

This is most definitely invalid yaml -

Version Variables

• Go version: v1.22.3
• go-yaml's Version: v1.11.2