Add suggestion for `format_push_string`

[mi2ebi]

Description

Per the examples on the website, I think this might be MachineApplicable? afaict there aren't placeholders that aren't already present, and using write! is guaranteed to compile

Version

rustc 1.88.0-nightly (00095b3da 2025-04-03)
binary: rustc
commit-hash: 00095b3da4f23d9b3e7a809ac6a4e2b2530df84c
commit-date: 2025-04-03
host: x86_64-pc-windows-msvc
release: 1.88.0-nightly
LLVM version: 20.1.2

Additional Labels

No response

[RReverser]

Duplicate of #8824.

[ada4a]

@rustbot label S-triage