gopls/internal/test/integration: ignore telemetry prompt in assertion

Fix a NoOutstandingWork assertion that was not ignoring the telemetry
prompt.

Fixes golang/go#65561

Change-Id: I194660965b681cc82e958dbbcf5df1404a576e09
Reviewed-on: https://go-review.googlesource.com/c/tools/+/563958
Auto-Submit: Robert Findley <[email protected]>
Reviewed-by: Alan Donovan <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>

Author: findleyr

gopls/internal/test/integration/diagnostics/diagnostics_test.go

@@ -557,7 +557,7 @@ func f() {
 			// AdHoc views are not critical errors, but their missing import
 			// diagnostics should specifically mention GOROOT or GOPATH (and not
 			// modules).
-			NoOutstandingWork(nil),
+			NoOutstandingWork(IgnoreTelemetryPromptWork),
 			Diagnostics(
 				env.AtRegexp("a.go", `"mod.com`),
 				WithMessage("GOROOT or GOPATH"),