Chaining `when` ... `do` ... `else when` ... `do` statements breaks syntax highlighting

[Xotchkass]

Compare with same-shaped if statement.

[rxptr]

I looked into it, this is a grammar bug in tree-sitter-grammars/tree-sitter-odin, not this extension. The when ... do hits a parser error, while the equivalent if/else parses fine, that's why highlighting degrades partway through.