Areas that return very few zones have incorrect visualisation

[LunaAsefaw]

🐛 Describe the bug

The zone score says it is =1 but when you look at what 1 is on the legend, it should be dark blue instead. Similar situation for the second image, still not the correct shade.

💡 Expected behavior

If the zone score value is equal to 1, it should generate a dark blue cell, not a turquoise one (which means zone=0)

📸 Screenshot

[dimasciput]

@akshay2408 let me work on this one

[gclapp1]

Tested for eight Pacific Island countries and four small European countries- all worked so closing ticket.