Unexpected curly brace insertion in rust-analyzer completions causes issues with auto-pairs

I am using rust-analyzer with Neovim, and cmp as my completion tool.
The problem is that when rust-analyzer provides completions for functions and other constructs, it unnecessarily includes an opening curly brace. This behavior is very inconvenient.
For example, when writing a method for a struct and using auto-pairs functionality, this extra opening curly brace gets interpreted as a pair with the curly brace from the impl block. This makes inputting the closing curly brace very cumbersome.
Here's a GIF demonstrating the issue:

This leads to issues with brace pairing and indentation.
Questions:

Why does rust-analyzer exhibit this behavior?
How can we avoid this problem?

Desired Outcome:
I would like to remove this extra opening curly brace from the completion suggestions. Ideally, the completion should only provide the function signature without any additional braces.
Environment:

Neovim version: v0.10.0
rust-analyzer version: 0.3.2089-standalone
nvim-cmp version: commit id -> a110e12d0b58eefcf5b771f533fc2cf3050680ac

Any insights or suggestions on how to address this issue would be greatly appreciated. Thank you for your time and assistance.

Reproduce the completion behavior using Neovim v0.10.0, rust-analyzer 0.3.2089-standalone, and the reported nvim-cmp commit. Compare function completion output with auto-pairs enabled; done means the completion provides the function signature without an unwanted opening curly brace and no longer disrupts brace pairing or indentation.