Tab whitespace separator incorrectly marked as invalid

[RedCMD]

Describe the bug
rule-s-l+flow-in-block has rule-s-flow-line-prefix come before rule-ns-flow-node
which allows spaces and tabs as whitespace separators after the (spaces only) indentation

notice that it works correctly if the flow-node starts on the same line as the map key.
also notice that only the first line of the flow-node is affected

To Reproduce

foo:
 	bar

Expected behaviour
For the tab whitespace-separator to not be marked as invalid

Versions

• Environment: VSCode 1.97.0
• yaml: 2.7.0
• extension: v1.16.0

Additional context