Rollup merge of #88954 - nbdd0121:panic3, r=oli-obk

Allow `panic!("{}", computed_str)` in const fn.

Special-case `panic!("{}", arg)` and translate it to `panic_display(&arg)`. `panic_display` will behave like `panic_any` in cosnt eval and behave like `panic!(format_args!("{}", arg))` in runtime.

This should bring Rust 2015 and 2021 to feature parity in terms of `const_panic`; and hopefully would unblock the stabilisation of #51999.

`@rustbot` modify labels: +T-compiler +T-libs +A-const-eval +A-const-fn

r? `@oli-obk`

compiler/rustc_span/src/symbol.rs

@@ -923,6 +923,7 @@ symbols! {
         panic_2021,
         panic_abort,
         panic_bounds_check,
+        panic_display,
         panic_fmt,
         panic_handler,
         panic_impl,