Remove or replace usage of hasH2Console variable

[php-coder]

ContentSecurityPolicyHeaderWriter and SecurityConfig use hasH2Console variable (or constructor argument) while the is a variable with a path to H2 console. We don't need 2 variables as we have H2 console when its path isn't null. I suggest to remove hasH2Console flag from constructors at least.

Tech debt for: 13657e0 (#1269, #1306)