Reproducer for ...

1. Load the project to vscode.
2. mkdir -p target
3. echo test > target/test.txt
4. cargo run -p consumer outputs the contents of Cargo.toml and target/test.txt
5. Open main.rs
6. Execute rust-analyzer: Expand macro recursively at caret at line 4. Contents of Cargo.toml is shown.
7. Move the cursor to line 5.
8. Execute the same action.

Expected behavior: The expansion should contain:

// Recursive expansion of generate_include_str! macro
// ===================================================

let contents = "abc";
{
  $crate::io::_print(builtin #format_args("{contents}"));
};

Actual behavior:

// Recursive expansion of generate_include_str! macro
// ===================================================

let contents = "";
{
  $crate::io::_print(builtin #format_args("{contents}"));
};