Fixed advance settings button is blocked by helpful hints in certain situations

[srirambv]

Test plan

#7660 (comment)

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• Did you search for similar issues before submitting this one?
  Yes

• Describe the issue you encountered:
  Advance Settings button hit area is blocked by helpful hints div when browser height is reduced

• Platform (Win7, 8, 10? macOS? Linux distro?):
  Windows 10 x64

• Brave Version (revision SHA):
  Brave 0.13.5
  rev 0e68342

• Steps to reproduce:

  1. Set browser language to Russian
  2. Open settings page and reduce browser height so that helpful hints section is right below Advance settings
  3. Mouse over Advance settings, click is recognized only when the cursor is in the top half of the button

• Actual result:
  Advance Settings button click area is blocked by helpful hints div when browser height is reduced

• Expected result:
  Should not change the click area when helpful hints section is right below the advance settings button

• Will the steps above reproduce in a fresh profile? If not what other info can be added?
  Yes

• Is this an issue in the currently released version?
  No

• Can this issue be consistently reproduced?
  Yes

• Extra QA steps:
  1.
  2.
  3.

• Screenshot if needed:
  

• Any related issues:
  Helpful hints section shows scroll bars when screen size is reduced #7404
  cc: @cezaraugusto