Incorrect `swap_previous` behavior with Rust code

[adaszko]

Describe the bug
swap_previous on Rust snippet results in malformed syntax

To Reproduce
Steps to reproduce the behavior:

1. Place the cursor on test parameter:

fn main() {
    if let Some(foo) = bar(baz, test, 100) {
                             // ^ here
    }
}

2. Issue swap_previous
3. Results in:

fn main() {
    if let , test(foo) = bar(bazSome, 100) {
    }
}

Expected behavior

fn main() {
    if let Some(foo) = bar(test, baz, 100) {
    }
}

Output of :checkhealth nvim-treesitter

Details

Paste the output here

Output of nvim --version

==============================================================================
nvim-treesitter:                                                            ✅

Requirements ~
- ✅ OK Neovim was compiled with tree-sitter runtime ABI version 15 (required >=13).
- ✅ OK tree-sitter-cli 0.26.8 (/opt/homebrew/bin/tree-sitter)
- ✅ OK tar 3.5.3 (/usr/bin/tar)
- ✅ OK curl 8.7.1 (/usr/bin/curl)
  curl 8.7.1 (x86_64-apple-darwin25.0) libcurl/8.7.1 (SecureTransport) LibreSSL/3.3.6 zlib/1.2.12 nghttp2/1.68.1
  Release-Date: 2024-03-27
  Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns ldap ldaps mqtt pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
  Features: alt-svc AsynchDNS GSS-API HSTS HTTP2 HTTPS-proxy IPv6 Kerberos Largefile libz MultiSSL NTLM SPNEGO SSL threadsafe UnixSockets

OS Info ~
- machine: arm64
- sysname: Darwin
- release: 25.5.0
- version: Darwin Kernel Version 25.5.0: Mon Apr 27 20:38:56 PDT 2026; root:xnu-12377.121.6~2/RELEASE_ARM64_T6000

Install directory for parsers and queries ~
- /Users/adaszko/.local/share/nvim/site
- ✅ OK is writable.
- ✅ OK is in runtimepath.

Installed languages     H L F I J ~
- ecma
- go                    ✓ ✓ ✓ ✓ ✓
- javascript            ✓ ✓ ✓ ✓ ✓
- jsx
- markdown              ✓ . ✓ ✓ ✓
- markdown_inline       ✓ . . . ✓
- python                ✓ ✓ ✓ ✓ ✓
- rust                  ✓ ✓ ✓ ✓ ✓
- zig                   ✓ ✓ ✓ ✓ ✓

  Legend: [H]ighlights, [L]ocals, [F]olds, [I]ndents, In[J]ections ~

Additional context
Add any other context about the problem here.