When cacheFlags: true cached traits overwrite updated traits in Flagsmith dashboard

[tiagoapolo]

Description

When the cacheFlags config option is set to true, cached traits overwrite updated traits in the Flagsmith dashboard. Making it difficult to update traits through Flagsmith dashboard.

Steps to Reproduce

1. Set the cacheFlags: true
2. Set trait in Flagsmith dashboard with value X for an identified user
3. Make sure the SDK consumer cachedi that trait and flags in your browser's local storage
4. Update trait with value Y in the Flagsmith dashboard.
5. Refresh SDK consumer and check if trait value in local storage is X
6. Check if trait value in Flagsmith dashboard has changed back from Y to X

Expected Behavior

When cacheFlags is enabled, updated traits in the Flagsmith dashboard should not be overwritten by cached values. The updated traits should be reflected accurately.