Context

This MR makes gas associated to comparing structured data more robust in G.

The last commit also contains robustness improvements for the translator in G.

Manually testing the MR

Document the interface of any function added or modified (see the coding guidelines)
~~[ ] Document any change to the user interface, including configuration parameters (see node configuration)~~
Provide automatic testing (see the testing guide).
[ ] For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, the Development Version section of CHANGES.md for everything else). done in !3004 (merged)
Select suitable reviewers using the Reviewers field below.

Edited May 27, 2021 by Mehdi Bouaziz