Added descriptive error message when newest Roc (zig compiler) is used to download platform built with old Roc#9352

Anton-4 merged 5 commits intoroc-lang:mainroc-lang/roc:mainfrom

J-Sparr0w:better-old-platform-download-errorJ-Sparr0w/roc:better-old-platform-download-errorCopy head branch name to clipboard