Fix invalid block interceptor intercepted wrong block

[asdacap]

Fix invalid block interceptor intercep generated block instead of suggested block. This is a problem because well crafted block can essentially hang block processing by sending an invalid block which when processed result in a hash of a valid block on main chain.

Changes:

• Mark suggested block as invalid instead of generated block.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Other (please describe):

Testing

• Yes
• No

In case you checked yes, did you write tests??

• Yes
• No

Comments about testing , should you have some (optional)

This seems to be a cause of failed hive test on a different branch when trying to move NP to ACCEPTED where possible, but for some reason, not on master.