Fix SHA-256 verification mismatch when downloading language servers (#35953)

Closes #35642 

Release Notes:

- Fixed: when the expected digest included a "sha256:" prefix while the
computed
digest has no prefix.
72761797a2jingyuexing committed on 8/10/2025, 7:40:14 PM· committed by GitHubparent6bd2f87
1 file changedLine totals unavailable