test: Fix a testing flake translating the login screen
test: Fix a testing flake translating the login screen

We need to wait for the text to translate.

Closes #7061
mvollmer/cockpit,SotolitoLabs/cockpit,mareklibra/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpituous/cockpit,stefwalter/cockpit,garrett/cockpit,garrett/cockpit,petervo/cockpit,SotolitoLabs/cockpit,stefwalter/cockpit,mareklibra/cockpit,larskarlitski/cockpit,cockpit-project/cockpit,moraleslazaro/cockpit,petervo/cockpit,stefwalter/cockpit,larskarlitski/cockpit,moraleslazaro/cockpit,SotolitoLabs/cockpit,petervo/cockpit,mvollmer/cockpit,deryni/cockpit,moraleslazaro/cockpit,petervo/cockpit,stefwalter/cockpit,moraleslazaro/cockpit,harishanand95/cockpit,cockpituous/cockpit,larsu/cockpit,cockpit-project/cockpit,michalskrivanek/cockpit,moraleslazaro/cockpit,andreasn/cockpit,xhad/cockpit,deryni/cockpit,Scribery/cockpit,larsu/cockpit,stefwalter/cockpit,mvollmer/cockpit,harishanand95/cockpit,xhad/cockpit,Scribery/cockpit,deryni/cockpit,Scribery/cockpit,Scribery/cockpit,larskarlitski/cockpit,Scribery/cockpit,moraleslazaro/cockpit,harishanand95/cockpit,cockpit-project/cockpit,cockpituous/cockpit,petervo/cockpit,martinpitt/cockpit,stefwalter/cockpit,larsu/cockpit,mareklibra/cockpit,larskarlitski/cockpit,xhad/cockpit,garrett/cockpit,SotolitoLabs/cockpit,michalskrivanek/cockpit,Scribery/cockpit,moraleslazaro/cockpit,larskarlitski/cockpit,deryni/cockpit,mareklibra/cockpit,andreasn/cockpit,mareklibra/cockpit,andreasn/cockpit,petervo/cockpit,cockpit-project/cockpit,cockpituous/cockpit,garrett/cockpit,michalskrivanek/cockpit,SotolitoLabs/cockpit,SotolitoLabs/cockpit,mvollmer/cockpit,deryni/cockpit,harishanand95/cockpit,michalskrivanek/cockpit,stefwalter/cockpit,michalskrivanek/cockpit,andreasn/cockpit,mvollmer/cockpit,xhad/cockpit,cockpituous/cockpit,andreasn/cockpit,andreasn/cockpit,xhad/cockpit,harishanand95/cockpit,michalskrivanek/cockpit,harishanand95/cockpit,deryni/cockpit,SotolitoLabs/cockpit,martinpitt/cockpit,deryni/cockpit,petervo/cockpit,larsu/cockpit,xhad/cockpit,garrett/cockpit,michalskrivanek/cockpit,martinpitt/cockpit,mareklibra/cockpit,andreasn/cockpit,larskarlitski/cockpit,larsu/cockpit,cockpituous/cockpit,xhad/cockpit,Scribery/cockpit,larsu/cockpit,cockpit-project/cockpit,larskarlitski/cockpit,harishanand95/cockpit,mareklibra/cockpit