Merge pull request #15079 from shadmansaleh/feat/verbose_lua

feat(lua): add :verbose support for lua config

src/nvim/eval/userfunc.c

@@ -2573,6 +2573,7 @@ void ex_function(exarg_T *eap)
   fp->uf_calls = 0;
   fp->uf_script_ctx = current_sctx;
   fp->uf_script_ctx.sc_lnum += sourcing_lnum_top;
+  nlua_set_sctx(&fp->uf_script_ctx);
 
   goto ret_free;