chore(forks): add gas definitions for forks prior to berlin

## Description

Following: https://github.com/ethereum/execution-spec-tests/pull/1952#discussion_r2237634275

> I'm taking a look at our framework and this seems like an issue with the lack of gas definitions for forks prior to Berlin.
In order to not increase the scope of this PR, I would simply constrain the test to only be filled for forks Berlin and after.

Relavent tests to update after adding the fix:
- https://github.com/ethereum/execution-spec-tests/pull/1952/files#diff-f32c31e19610d5b7c0badfa59eeb8a8c7d5fdf09bb3e804265bcba5625678a59R16-R18
- https://github.com/ethereum/execution-spec-tests/pull/2057/files#diff-f32c31e19610d5b7c0badfa59eeb8a8c7d5fdf09bb3e804265bcba5625678a59R152-R153

Start with the discussion in execution-spec-tests PR #1952 and inspect the referenced test changes in PRs #1952 and #2057. Locate the framework's gas definitions, add definitions for forks before Berlin, and update the referenced tests so they cover the newly supported forks.

Written by the indexing model from the issue text.