Auto merge of #4635 - Lythenas:suggestions-for-assert-false, r=flip1995

Add assert message to suggestion in lint assertions_on_constants

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- [x] suggest replacing `assert!(false, "msg")` with `panic!("msg")`
- [x] extend to allow ~~variables~~ any expression for `"msg"`
- ~~suggest replacing `assert!(false, "msg {}", "arg")` with `panic!("msg {}", "arg")`~~

changelog: add assert message to suggestion in lint assertions_on_constants

Work towards fixing: #3575

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