Fix auto-tz casting bug

[bozhonghu]

Description

Fix auto-tz casting bug. The original code was unable to handle primitive arrays, i.e. int[] and would throw an error Caused by: java.lang.ClassCastException: [I cannot be cast to [Ljava.lang.Object; when encountering int[]. This specifically can cause an issue when trying to use auto-tz to convert from an array of floats to

 type: {
        type: TENSOR
        tensorCategory: SPARSE
        dimensionType: [INT]
        valType: FLOAT
      }

Changing it to use toArray resolves this issue.

How was this PR tested?

Added a new test case within integ test

Does this PR introduce any user-facing changes?

No