UI: Add useful hint for Sample Data

[vivekratnavel]

Instead of showing simply "No Sample Data available", we should show some useful hints on how to get the sample data populated. Something like "To see Sample Data, run the Profiler Ingestion. To schedule Profiler Ingestion, refer to these docs."

cc @ShilpaVernekar to help with the text

[ShilpaVernekar]

Sorry, I missed noticing this... Here's the edited text To view Sample Data, run the Profiler Ingestion. Please refer to this doc to schedule the Profiler Ingestion cc @aniketkatkar97