FrameCapture: Skip glGetActiveUniformBlockName calls. Since moving to plain C traces removed references to uniform block indices, this call should also be part of the related skip list. This fixes capturing traces using the call an not hitting UNREACHABLE when handling TUniformBlockIndex. Bug: angleproject:7731 Bug: angleproject:7402 Change-Id: I510aceaa0965c2469367212784b504ea251a2541 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4003222 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Lubosz Sarnecki <lubosz.sarnecki@collabora.com>