vim-patch:8.2.5102: interrupt not caught in test

Problem:    Interrupt not caught in test.
Solution:   Consider an exception thrown in the current try/catch when got_int
            is set.  Also catch early exit when not using try/catch.

8bea171f15

Cherry-pick test changes from patch 8.2.0557.

bfe13ccc58

Co-authored-by: Bram Moolenaar <Bram@vim.org>

src/nvim/ex_cmds.c

@@ -847,8 +847,11 @@ void ex_retab(exarg_T *eap)
       vcol += win_chartabsize(curwin, ptr + col, (colnr_T)vcol);
       if (vcol >= MAXCOL) {
         emsg(_(e_resulting_text_too_long));
-        // set got_int to break out of any loop
-        got_int = true;
+        // when not inside a try/catch set got_int to break out of any
+        // loop
+        if (trylevel == 0) {
+          got_int = true;
+        }
         break;
       }
       col += utfc_ptr2len(ptr + col);