Do not panic while panicking (#7167)

* Do not panic while panicking

* Update primitives/runtime/src/lib.rs

Co-authored-by: David <dvdplm@gmail.com>

* Move function to `sp-std`

Co-authored-by: David <dvdplm@gmail.com>

substrate/primitives/std/with_std.rs

@@ -44,3 +44,7 @@ pub mod collections {
 	pub use std::collections::btree_set;
 	pub use std::collections::vec_deque;
 }
+
+pub mod thread {
+	pub use std::thread::panicking;
+}