Bug in shared formulas: non-fixed cells are not updated if the formula has a fixed cell (#2354)

Example: right shift shared formula: IF(A$1=0,0,A1/A$1)
Expected value: IF(B$1=0,0,B1/B$1)
Actual value: IF(B$1=0,0,A1/B$1)

Similar behavior is observed when copying formulas vertically.
This issue occurs because a fixed and a non-fixed cell hit the same element of the $newCellTokens array by index $cellIndex

tests/data/ReferenceHelperFormulaUpdates.php

@@ -1,6 +1,20 @@
 <?php
 
 return [
+    [
+        '=IF(A$1=0,0,A1/A$1)',
+        1,
+        0,
+        '2021',
+        '=IF(B$1=0,0,B1/B$1)',
+    ],
+    [
+        '=IF($A1=0,0,A1/$A1)',
+        0,
+        1,
+        '2021',
+        '=IF($A2=0,0,A2/$A2)',
+    ],
     [
         '=SUM(C3:E5)',
         -2,