[mlir][Bufferization] castOrReallocMemRefValue: Use BufferizationOptions (#89175)

This allows to configure both the op used for allocation and copy of
memrefs.
It also changes the default behavior because the default allocation in
`BufferizationOptions` creates `memref.alloc` with `alignment = 64`
where we used to create `memref.alloca` without any alignment before.
Fixes
```
// TODO: Use alloc/memcpy callback from BufferizationOptions if called via
// BufferizableOpInterface impl of ToMemrefOp.
```