Yaml formatter does not format spaces per indent

### Apache NetBeans version

Apache NetBeans 15 release candidate

### What happened

When I change `Number of Spaces per Indent` for `Yaml` language to 2 and open YAML file indented with 4 spaces, click to format and nothing happens.

### How to reproduce

change `Number of Spaces per Indent` for `Yaml` language to 2:

Open YAML file indented with 4 spaces and click Format.

### Did this work correctly in an earlier version?

No / Don't know

### Operating System

Linux 5.19.2-1-default, openSUSE Tumbleweed, x86_64

### JDK

OpenJDK 64-Bit Server VM 11.0.16+8-suse-1.1-x8664

### Apache NetBeans packaging

Own source build

### Anything else

_No response_

### Are you willing to submit a pull request?

No

### Code of Conduct

Yes

Start by reproducing the reported case in NetBeans 15: set YAML's Number of Spaces per Indent to 2, open a YAML file using 4-space indentation, and run Format. Trace the YAML formatter's handling of that setting; done means formatting changes indentation to the configured width and the behavior is covered by a regression test.

Written by the indexing model from the issue text.