Material UI v5: rename Grid's justify

Proprietary

Renames justify to justifyContent. Ported from the MUI codemod v5.0.0/grid-justify-justifycontent.

org.openrewrite.react.mui.v5.grid-justify-justifycontent
mod run . --recipe=org.openrewrite.react.mui.v5.grid-justify-justifycontent

Install it once from Recipe actions, then run it on every repository under the current directory. New to the Moderne CLI? Set it up.