RUM-6316: Remove Session Replay button mapper border

[ambushwork]

What does this PR do?

Remove Session Replay button mapper border.

The logic before was adding a black border to every text view inside which doesn't have a shape or border, But text view mapper always return a wireframe without them, so the black border will always be applied, which doesn't correspond to the real UI.

Motivation

RUM-6316

Demo

App Screen	Before	After

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.03%. Comparing base (26c28e2) to head (b5c485a).
Report is 4 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2280      +/-   ##
===========================================
- Coverage    70.18%   70.03%   -0.16%     
===========================================
  Files          732      732              
  Lines        27227    27192      -35     
  Branches      4580     4573       -7     
===========================================
- Hits         19109    19042      -67     
- Misses        6861     6873      +12     
- Partials      1257     1277      +20     

Files with missing lines	Coverage Δ
...ionreplay/internal/recorder/mapper/ButtonMapper.kt	100.00% <100.00%> (+27.27%)	⬆️

... and 25 files with indirect coverage changes