Fixed missed opportunity for wide tags in btree set

This code was written before we had wide tags, which were introduced for
this exact, and common, use case of needing to replace a range of tag
subtypes. Must have just been missed.

lfs.c

@@ -4531,10 +4531,7 @@ static int lfsr_btree_set(lfs_t *lfs, lfsr_btree_t *btree,
         // of the rest
         int degenerate = lfsr_btree_commit(lfs, btree, bid, 1, &rbyd,
                 LFSR_ATTRS(
-                    (tag != rtag
-                        ? LFSR_ATTR(rid, TAG(lfsr_tag_setrm(rtag)), 0, NULL)
-                        : LFSR_ATTR_NOOP),
-                    LFSR_ATTR(rid, TAG(tag), 0, DATA(data)),
+                    LFSR_ATTR(rid, WIDE(TAG(tag)), 0, DATA(data)),
                     LFSR_ATTR(rid, GROW(RM), +weight-rweight, NULL)));
         if (degenerate < 0) {
             return degenerate;