path.Replace changing type creates a weird yaml result

[gkampitakis]

Describe the bug

Hi, again thanks for maintaining this great library 🙇 . I was trying to dynamically replace a path that was integer to a map and the result of the path.ReplaceWithReader looks weird and wrong. Maybe what I am trying to do is wrong or not supported, so sorry for the noise if that's the case.

To Reproduce

I think the go playground is easier to describe the issue I am noticing 😅 https://go.dev/play/p/SvDu9jqRw8a.

Expected behavior

Not sure if this is supposed to be supported, changing the type. I would either expect to fail or work and creating an object like
instead of doing this weird invalid merging and cutting the workds.

age:
  in_months: 120
  in_years: 10

Screenshots
If applicable, add screenshots to help explain your problem.

Version Variables

• Go version: [e.g. 1.21 ]
• go-yaml's Version: [e.g. v1.11.1 ]

Additional context
Add any other context about the problem here.

[gkampitakis]

I have also tried with

struct {
	InYears  uint64 `yaml:"in_years"`
	InMonths uint64 `yaml:"in_months"`
}{
	InYears:  10,
	InMonths: 120,
}