avoid flaky lsp/diagnostics test
avoid flaky lsp/diagnostics test

Summary:
status messages can happen at any time and aren't the focus of this test. ignore them

Changelog: [internal]

Reviewed By: SamChou19815

Differential Revision: D38504255

fbshipit-source-id: 977002d4297e0cf693cb3425b3d0759b7e36ea0f

facebook/flow,mroch/flow,mroch/flow,facebook/flow,mroch/flow,mroch/flow,facebook/flow,facebook/flow,facebook/flow,facebook/flow,facebook/flow,mroch/flow,mroch/flow,mroch/flow