Add a new host function for reporting fatal errors; make WASM backtraces readable when printing out errors (#10741)

* Add a new host function for reporting fatal errors

* Fix one of the wasmtime executor tests

* Have `#[runtime_interface(wasm_only)]` actually mean WASM-only, and not no_std-only

* Print out errors through `Display` instead of `Debug`

* Switch one more trait to require `Error` for its error instead of only `Debug`

* Align to review comments

substrate/client/tracing/src/block/mod.rs

@@ -253,7 +253,7 @@ where
 				self.client.runtime_api().execute_block(&parent_id, block)
 			}) {
 				return Err(Error::Dispatch(
-					format!("Failed to collect traces and execute block: {:?}", e).to_string(),
+					format!("Failed to collect traces and execute block: {}", e).to_string(),
 				))
 			}
 		}