Rename does not work in some edge cases

[QuadnucYard]

Describe the bug

It seems that the problem occurs when the cursor is between the element and a particular symbol (except dot).

#let foo(param) = {
  param = 3
  let foo = (:)
  foo.bar = 3
  let b = 3
  let c = b
  let a = b + c - 3
}

Package/Software version:

Version: 1.96.2
Commit: fabdb6a30b49f79a7aba0f2ad9df9b399473380f
Date: 2024-12-19T10:22:47.216Z (1 wk ago)
Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Code/1.96.2 Chrome/128.0.6613.186 Electron/32.2.6 Safari/537.36

tinymist 
Build Timestamp:     2024-12-25T13:15:41.315312000Z
Build Git Describe:  v0.12.14
Commit SHA:          db2080715352f8cc8eba699b42ae3fa828892c07
Commit Date:         None
Commit Branch:       None
Cargo Target Triple: x86_64-pc-windows-msvc
Typst Version:       0.12.0
Typst Source:        git+https://github.com/Myriad-Dreamin/typst.git?tag=tinymist-v0.12.0#58426a90a7ef721738a01be09793d33e55eb75a9