Fix IOException when using sbt thin client (backport #10890)

[mergify]

This is an automatic backport of pull request #10890 done by Mergify.
Cherry-pick of 932aede has failed:

On branch mergify/bp/2.8.x/pr-10890
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	both modified:   dev-mode/sbt-plugin/src/main/scala/play/sbt/PlayInteractionMode.scala

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