Fix NDVI values getting overwritten by rgba values when hovered over image

[rishabhshuklax]

Fixes #1594

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[codecov[bot]]

Codecov Report

Merging #1595 into main will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1595   +/-   ##
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  Coverage   66.65%   66.65%           
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  Files         130      130           
  Lines        2687     2687           
  Branches      434      434           
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  Hits         1791     1791           
  Misses        896      896

[rishabhshuklax]

@publiclab/is-reviewers

[jywarren]

Ah, this is great. Are we able to add to the UI test for this module? Thank you!

[rishabhshuklax]

@jywarren I was trying to add the test for this but was not able to trigger the hover event for the image, do you have any idea how to procced further, Thanks!