normalize single-variable for-in nodes in the deserializer and
rewrite legacy input in test_ast when the bundled parser cannot
generate updated parse tables.
skip known-invalid tsf fixtures in test.sh so batch runs can
continue past syntax errors that the grammar should not accept.
- rename tree-sitter fields for inherited/rdo to 'call'
- regenerate parser sources and sync into lsp-server
- add RdoExpression to AST + symbol/semantic visitors
csh