Following #17605, another attempt to update rust toolchain

Changes:

- Language
  - After https://github.com/rust-lang/rust/pull/134258, we can't manually impl both `ToString` and `fmt::Display`, so this PR add a new trait `ToStringValue` to work around types type produces different result between ToString and Display.
- Clippy
  - `Option::map_or(false, ...)` --> `Option::is_some_and(...)`
  - `Option::map_or(true, ...)` --> `Option::is_none_or(...)`
  - `(a + b - 1 )/ b` --> `a.div_ceil(b)`
  - `io::Error::new(ErrorKind::Other, ...)` --> ` io::Error::other(...)`
  - `Slice::group_by` --> `Slice::chunk_by`
  - `Result::map_err(|e| {...; e})` --> `Result::inspect_err(|e| { ... })`
  - `Map::get(&key).is_{some, none}()` --> `Map::contains_key()`
- Formatter
  - The import order now follows ascii order, e.g. before is "use crate::{a, b, c, A, B, C}", after is "use crate::{A, B, C, a, b, c}". Most changes are due to this.
  - List in rust doc should be properly aligned.
- cargo-deny
  - `vulnerability`, `notice` and `unsound` can't be config in version 2, and `unmaintained` can't be allowed anymore(but support setting `workspace` to allow indirected pkgs). So replacing some unmaintained packages with suggested alternatives.  (See: https://github.com/tikv/tikv/pull/18416)

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