fix(ui): use consistent case for diff modes (#6464)

[aslafy-z]

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Closes #5454

[codecov]

Codecov Report

Merging #7945 (f34f779) into master (f89d40c) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7945      +/-   ##
==========================================
- Coverage   41.64%   41.64%   -0.01%     
==========================================
  Files         171      171              
  Lines       22447    22447              
==========================================
- Hits         9349     9347       -2     
- Misses      11768    11769       +1     
- Partials     1330     1331       +1     

Impacted Files	Coverage Δ
util/settings/settings.go	47.60% <0.00%> (-0.25%)	⬇️

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[ciiay]

LGTM

[jannfis]

LGTM, thanks @aslafy-z !