Fix Gnosis blob fee collection

[Marchhill]

Note: new tests not enabled since we don't have prague timestamp, to see them working check this PR #8095

Changes

• Ensure blob fee collector is enabled from chainspec
• Add tests for blob fee collector chainspec configuration

Types of changes

What types of changes does your code introduce?

• Bugfix (a non-breaking change that fixes an issue)
• New feature (a non-breaking change that adds functionality)
• Breaking change (a change that causes existing functionality not to work as expected)
• Optimization
• Refactoring
• Documentation update
• Build-related changes
• Other: tests

Testing

Requires testing

• Yes
• No

If yes, did you write tests?

• Yes
• No

Documentation

Requires documentation update

• Yes
• No

Requires explanation in Release Notes

• Yes
• No