Comments cannot be extracted from Flow-style YAML

[shuheiktgw]

Describe the bug
Comments do not seem to be extracted from Flow-style YAMLs using yaml.CommentToMap.

To Reproduce

From the example below, only "# comment2" can be extracted using yaml.CommentToMap, while all other comments appear to be ignored.

func TestComment(t *testing.T) {
	var input = []byte(`
key1: [] # comment1
key2: [ # comment2
 elm1, # comment3
 elm2, # comment4
] # comment5
key3: {} # comment6
key4: { # comment7
 key1: value1, # comment8
 key2: value2, # comment9
} # comment10
`)

	var f map[string]interface{}
	cm := yaml.CommentMap{}
	var err error
	if err = yaml.UnmarshalWithOptions(input, &f, yaml.CommentToMap(cm)); err != nil {
		panic(err)
	}

	for k, comments := range cm {
		fmt.Println("key: " + k)
		for _, comment := range comments {
			fmt.Println(comment.Texts)
		}
	}
} 

Version Variables

• Go version: 1.23
• go-yaml's Version: v1.15.13

Additional context
#419 seems to be related to this issue.