[Backport 2.x] [BUG][Discover] Enable 'Back to Top' Feature in Discover for scrolling to top

[opensearch-trigger-bot[bot]]

Backport d407f5522062f4f6ad76b73510becde42726b3f3 from #6008.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 67.09%. Comparing base (bd04745) to head (c8337ad).

Additional details and impacted files

@@           Coverage Diff           @@
##              2.x    #6011   +/-   ##
=======================================
  Coverage   67.08%   67.09%           
=======================================
  Files        3308     3308           
  Lines       63731    63731           
  Branches    10168    10168           
=======================================
+ Hits        42757    42759    +2     
+ Misses      18509    18508    -1     
+ Partials     2465     2464    -1     

Flag	Coverage Δ
Linux_1	35.21% <ø> (ø)
Linux_2	55.12% <ø> (ø)
Linux_3	44.51% <ø> (+<0.01%)	:arrow_up:
Linux_4	35.33% <ø> (ø)
Windows_1	35.23% <ø> (ø)
Windows_2	55.09% <ø> (ø)
Windows_3	44.51% <ø> (ø)
Windows_4	35.33% <ø> (ø)

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