Avoid OOB index in tree-sitter query parser/builder

This works around a bug in tree-sitter where the query parser/builder
accesses an array out-of-bounds causing undefined behavior. This fixes
a non-deterministic bug that would affect the behavior of the comment
grammar in Rust injections - sometimes comment tokens like WARN would
not be highlighted. Note that this change to the query is cosmetic: the
position of predicates in a pattern is not consequential.

The bug upstream is tracked in
<https://redirect.github.com/tree-sitter/tree-sitter/issues/4421>.

Co-authored-by: Pascal Kuthe <[email protected]>

Author: the-mikedavis

runtime/queries/rust/injections.scm

@@ -60,7 +60,7 @@
 
 (call_expression
   function: (scoped_identifier
-    path: (scoped_identifier (identifier) @_regex (#any-of? @_regex "Regex" "RegexBuilder") .)
+    path: (scoped_identifier (identifier) @_regex . (#any-of? @_regex "Regex" "RegexBuilder"))
     name: (identifier) @_new (#eq? @_new "new"))
   arguments: (arguments (raw_string_literal (string_content) @injection.content))
   (#set! injection.language "regex"))