Update gathering data test helpers to use getSampleReportArgs().

[techanvil]

Feature Description

At present, the provideAnalytics4GatheringDataState() and provideSearchConsoleGatheringDataState() helper functions are duplicating the report arguments used for the report that's used to determine the gathering data state.

We now have the getSampleReportArgs() helpers for both Analytics and Search Console in the plugin code, and should update the above test helpers to make use of getSampleReportArgs().

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Acceptance criteria

• The provideAnalytics4GatheringDataState() and provideSearchConsoleGatheringDataState() helper functions should use getSampleReportArgs() to retrieve the arguments for the relevant reports, rather than duplicating the report args.

Implementation Brief

Test Coverage

QA Brief

Changelog entry