[improvement] Change array offset type from UInt32 to UInt64 (#10070)

Now column `Array<T>` contains column `offsets` and `data`, and type of column `offsets` is UInt32 now.
If we call array_union to merge arrays repeatedly, the size of array may overflow.
So we need to extend it before `Array Data Type` release.

be/src/vec/columns/column_vector.cpp

@@ -327,7 +327,7 @@ ColumnPtr ColumnVector<T>::replicate(const IColumn::Offsets& offsets) const {
 
     // vectorized this code to speed up
     IColumn::Offset counts[size];
-    for (size_t i = 0; i < size; ++i) {
+    for (ssize_t i = 0; i < size; ++i) {
         counts[i] = offsets[i] - offsets[i - 1];
     }