Matrix and if do not work together

[ChrisWRWX]

Due to the delayed interpolation of variables by if, and matrix overwriting the original variables, matrix with an if does not work.

Below example should produce 1 sheet depending on the variable switch, but does not.

read:
- test:
    rows: 5
    values:
        header: value

write:
- matrix:
    variables:
      value: [a]
    write:
        - memory:
            if: ${switch} == '1'
            id: test_matrix_write_if_${value}1
        - memory:
            if: ${switch} == '2'
            id: test_matrix_write_if_${value}1