docs(Avatar): remove activeOpacity prop

[dakshbhardwaj]

Motivation

ActiveOpacity was not working on the Avatar component.

Fix: #3552

Type of change

• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update

How Has This Been Tested?

• Jest Unit Test
• Checked with example app

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation using yarn docs-build-api
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes

[dakshbhardwaj]

@arpitBhalla can you please review it?

[codecov]

Codecov Report

Merging #3618 (12cef67) into next (b3fc37e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             next    #3618   +/-   ##
=======================================
  Coverage   79.29%   79.29%           
=======================================
  Files          87       87           
  Lines        1811     1811           
  Branches      802      802           
=======================================
  Hits         1436     1436           
  Misses        369      369           
  Partials        6        6           

Impacted Files	Coverage Δ
packages/base/src/Avatar/Avatar.tsx	97.22% <ø> (ø)

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