test: migrate to runtime config

[meskill]

Summary:
Migrate execution_spec tests to runtime config instead of graphql configuration only.

Please, note that most of the snapshots are changed only in the way of adding new link that now represents graphql schema and the behaviour is not changed.-

Issue Reference(s):
Related to #3164

Build & Testing:

• I ran cargo test successfully.
• I have run ./lint.sh --mode=fix to fix all linting issues raised by ./lint.sh --mode=check.

Checklist:

• I have added relevant unit & integration tests.
• I have updated the documentation accordingly.
• I have performed a self-review of my code.
• PR follows the naming convention of <type>(<optional scope>): <title>

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.30%. Comparing base (52d515c) to head (22c82f8).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3229      +/-   ##
==========================================
- Coverage   86.44%   86.30%   -0.14%     
==========================================
  Files         282      282              
  Lines       28756    28761       +5     
==========================================
- Hits        24858    24823      -35     
- Misses       3898     3938      +40     

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