[FRONTEND] Change Uppercases to sentence case

[MTorbay-Filigran]

Proposed changes

• Changed css rules in darkTheme and lightTheme

Related issues

• https://github.com/OpenCTI-Platform/opencti/issues/13453

Checklist

• [ ] I consider the submitted work as finished
• [ ] I tested the code for its functionality
• [ ] I wrote test cases for the relevant uses case (coverage and e2e)
• [ ] I added/update the relevant documentation (either on github or on notion)
• [ ] Where necessary I refactored code to improve the overall quality

Further comments

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 2.46%. Comparing base (26a4bae) to head (41f2d50).

:exclamation: There is a different number of reports uploaded between BASE (26a4bae) and HEAD (41f2d50). Click for more details.

HEAD has 8 uploads less than BASE

Flag	BASE (26a4bae)	HEAD (41f2d50)
opencti	6	2
opencti-front	4	2
opencti-graphql	2	0

Additional details and impacted files

@@                 Coverage Diff                  @@
##           release/current   #13646       +/-   ##
====================================================
- Coverage            30.65%    2.46%   -28.19%     
====================================================
  Files                 2906     2118      -788     
  Lines               192005   109272    -82733     
  Branches             39089    29799     -9290     
====================================================
- Hits                 58854     2698    -56156     
+ Misses              133151   106574    -26577     

Flag	Coverage Δ
opencti	2.46% <ø> (-28.19%)	:arrow_down:
opencti-front	2.46% <ø> (-0.01%)	:arrow_down:
opencti-graphql	?

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