For R.C. - Fleet UI: Align InfoBanner leading icon with first line of wrapped copy (#51446)

[RachelElysia]

Issue

Closes #51395

Description

• Previously merged into main with Fleet UI: Align InfoBanner leading icon with first line of wrapped copy #51446
• This is for the 4.91.0 R.C.

Testing

• QA'd all new/changed functionality manually

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (rc-minor-fleet-v4.91.0@8d390a7). Learn more about missing BASE report.

Additional details and impacted files

@@                    Coverage Diff                    @@
##             rc-minor-fleet-v4.91.0   #51470   +/-   ##
=========================================================
  Coverage                          ?   68.53%           
=========================================================
  Files                             ?     3980           
  Lines                             ?   256213           
  Branches                          ?    13674           
=========================================================
  Hits                              ?   175590           
  Misses                            ?    64995           
  Partials                          ?    15628           

Flag	Coverage Δ
frontend	62.76% <ø> (?)

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