Add transcript for TMiR 2025-08

[vcarl]

Also fix title for June, not sure how I screwed that one up

[what-the-diff]

PR Summary

• Title of the Transcript Updated
  The title of the transcript has been modified. Originally, it was "TMiR 2025-06: Vercel shakeups, new React Compiler docs" and it has been changed to "TMiR 2025-06: kinda quiet tbh. ES2025 finalized, new Safari". This change better reflects the content of the transcript.

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