Revert "CC-1984: Change uncomment code text (2nd try)"

[andy1li]

Reverts #70

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Note

Clarifies starter comments and enables stage‑1 TCP accept logic across multi-language solutions.

• Starters/Templates:
  • Clarify instructional comment from "Uncomment the code below to pass the first stage the first stage" to "Uncomment this block to pass the first stage" across multi-language starters (compiled_starters/*, starter_templates/*).
• Solutions (solutions/*/01-vi6):
  • Enable stage‑1 TCP server logic across languages (C++, C#, Gleam, Go, Java, JavaScript, TypeScript, Kotlin, Python, Rust, Zig): bind/listen, accept a client connection, and in some cases remove debug logs and set reuse-address.

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[linear]

CC-1984 Change uncomment code text