Removed default initialization of the CategoryType for the WaveConditionsInput: - Fixed failing tests for stability stone cover that depend on the CategoryType --> Exceptions appear due to 0 being an invalid enum valueWTI-1707
Applied helper to set the WaveConditions CategoryType for stability stone cover: - Only for adding multiple calculations based on the HBL -- Introduced local testhelper to prevent duplication of the enum conversion logic -- Cleaned up test to reduce castsWTI-1707
