fix: align provider icon within omniauth login button (#2795)

[alizaib1217]

• rather 1-story 1-commit than sub-atomic commits

• commit title is meaningful => git history search

• commit description is helpful => helps the reviewer to understand the changes

• code is up-to-date with the latest developments of the target branch (rebased to it or whatever) => ⏩-merge for linear history is favoured

• added code is linted

• tests are passing (at least locally): we still have some random test failure on CI. thinking of asking spec/examples.txt to be commited

• in case the changes are visible to the end-user,  video or screenshots should be added to the PR => helps with user testing

• testing coverage improvement is improved.

• CHANGELOG :  add a bullet point on top (optional: reference to github issue/PR )

• parallele PR for documentation  on docusaurus  if the feature/fix is tagged for a release

[github-actions]

LCOV of commit 1083009 during CI - Ruby Lint, RSpec, and code coverage #1030

Summary coverage rate:
  lines......: 66.9% (18259 of 27303 lines)
  functions..: no data found
  branches...: no data found

Files changed coverage rate: n/a