patch 8.2.2058: using mkview/loadview changes the jumplist

Problem:    Using mkview/loadview changes the jumplist.
Solution:   Use ":keepjumps".  Don't let ":badd" or ":balt" change the
            jumplist. (closes #7371)
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 582791a..a06e8a8 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -6638,7 +6638,8 @@
 	else if (eap->cmdidx == CMD_enew)
 	    readonlymode = FALSE;   // 'readonly' doesn't make sense in an
 				    // empty buffer
-	setpcmark();
+	if (eap->cmdidx != CMD_balt && eap->cmdidx != CMD_badd)
+	    setpcmark();
 	if (do_ecmd(0, (eap->cmdidx == CMD_enew ? NULL : eap->arg),
 		    NULL, eap,
 		    // ":edit" goes to first line if Vi compatible