Fix wrong aspect ratio of logo in icons (#18639)

app/helpers/branding_helper.rb

app/javascript/icons/favicon-16x16.png

app/javascript/icons/favicon-32x32.png

app/javascript/icons/favicon-48x48.png

app/javascript/images/logo-symbol-icon.svg

app/javascript/images/logo.svg

app/javascript/images/mailer/logo.png

app/javascript/images/mailer/wordmark.png

lib/assets/wordmark.dark.png

lib/assets/wordmark.light.png

lib/tasks/branding.rake

public/badge.png

public/favicon.ico