Fix duplication of relationships for templates

[gmazoyer]

When loading a new schema, generating relationships for templates could end up in trying to duplicate them which was leading to a schema load error (to avoid duplication). This change ensures that relationships that need update are removed fromt the template schema before re-adding them.

[codspeed-hq]

CodSpeed Performance Report

Merging #5832 will not alter performance

_{Comparing gma-20250224-templateduplicatrel (1d94e3f) with release-1.2 (afc93fc)}

Summary

✅ 10 untouched benchmarks

[dgarros]

When loading a new schema, generating relationships for templates could end up in trying to duplicate them which was leading to a schema load error (to avoid duplication). This change ensures that relationships that need update are removed fromt the template schema before re-adding them.

Are we storing the schema for these relationships in the database right now ? if the relationships are auto-generated I think it's best to not store the schema in the database altogether
it sounds similar to an issue @ajtmccarty is working on

[gmazoyer]

Are we storing the schema for these relationships in the database right now ? if the relationships are auto-generated I think it's best to not store the schema in the database altogether it sounds similar to an issue @ajtmccarty is working on

Unless I'm mistaken none of this is stored in the database.