It's mostly just that the feature is always useful (that's why it's present so often in interpreted langauges), but muuuuuch harder to do for non-interpreted languages. Notably, a subsequent goal for the Nim feature is indeed to add a full-blown REPL to Nim too, I believe. Also, worth to note that some non-interpreted languages do also have REPLs, e.g.: Haskell, OCaml, C++ (! — see CLING).

The very term REPL comes from a language that's been used compiled to native code since 1960s (Lisp)

In fact, "compiled" programs on many platforms require an interpreter to set them up by dynamic code loading (including modifications if needed).

In ELF header, it's called "program interpreter", which gives a path to a program that understands this particular file and can assembly a running image in memory