histogram issue when selecting == or > bar

[inodb]

From @tmazor: If I select the >14 bar, the histogram highlights both the 14 & >14 bars

I think the filter that gets applied is correct (header is right and when I browsed Clinical Data tab, all counts were 15+), but the histogram is misleading.
I don't see this happening with other histograms, so I suspect this is again related to the fact that each bar here is a single value.

[onursumer]

When we select both 14 and >14 the bar chart display is correct but the header is misleading this time. It still shows >14 but it should be >=14.

So, this is a frontend issue where we incorrectly interpret and render the applied filters. We need to fix both BarChart.tsx and UserSelections.tsx components in order to display the selected filters properly. It's probably a better idea to create a separate issue for the user selections component though.

[inodb]

follow up in #9266