Update test expectation

The new output is correct, though the fix here was rather accidental.
We still need a proper fix for bug #78308 on earlier branches, but
for now update the test to make the build green again.

Author: nikic

ext/intl/tests/breakiter_getPartsIterator_var1.phpt

@@ -33,24 +33,24 @@ array(5) {
 array(5) {
   [0]=>
   string(3) "foo"
-  [4]=>
+  [3]=>
   string(1) " "
-  [5]=>
+  [4]=>
   string(3) "bar"
-  [8]=>
+  [7]=>
   string(1) " "
-  [9]=>
+  [8]=>
   string(3) "tao"
 }
 array(5) {
   [3]=>
   string(3) "foo"
-  [5]=>
+  [4]=>
   string(1) " "
-  [8]=>
+  [7]=>
   string(3) "bar"
-  [9]=>
+  [8]=>
   string(1) " "
-  [12]=>
+  [11]=>
   string(3) "tao"
 }