Sort declarations in type_analyzer_operations.dart.

Change-Id: I7ac3d89425db12a94dfde7f0ad49120f3442cd85
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/402360
Auto-Submit: Paul Berry <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>
Reviewed-by: Konstantin Shcheglov <[email protected]>

Author: stereotype441