Support for using ${{ env.SOMETHING }} when defining a matrix

name: CI
env:
  DEFAULT: 1
  
jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        value: [ "${{ env.DEFAULT }}", "2", "5" ]

I get a syntax error: Unrecognized named-value: 'env'. Located at position 1 within expression: env.DEFAULT.

It would be useful if context and expressions could be used in matrix.