[analysis_server] Regenerate LSP classes with new formatting

We run the formatter as part of generating these files. This just regenerates them (to get the new formatting) with no changes so that future changes to the generated files don't produce a huge unrelated diff.

Change-Id: I27e73c800c6f0a918adf29d6106e7c2985dd6241
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/393862
Commit-Queue: Samuel Rawlins <[email protected]>
Reviewed-by: Brian Wilkerson <[email protected]>
Reviewed-by: Samuel Rawlins <[email protected]>

Author: DanTup