[PaymentBundle] fix null title for payment provider

[dpfaffenbauer]

Q	A
Bug fix?	yes
New feature?	no
BC breaks?	no
Deprecations?	no

[sonarcloud[bot]]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
6.3% Duplication on New Code

See analysis details on SonarCloud