[clang] [Clang][NFC] Restore "Non-comprehensive list of changes in this release" in ReleaseNotes (PR #102134)

[Mital Ashok via cfe-commits]

MitalAshok wrote:

See comment: https://github.com/llvm/llvm-project/commit/10c6d6349e51bb245b9deec4aafca9885971135b#r145078148

(This is a separate PR to make sure it isn't reverted as part of a bigger change)


https://github.com/llvm/llvm-project/pull/102134