## Context
While deploying the IS_NEW_RELATION_ENABLED (we don't compute relation
based on relationMetadata anymore) to existing workspace, I've tested to
run a sync-metadata post feature flag activation. This has raised two
issues:
- the workspaceMigration generator (which is over-complex and should be
refactored later) for fieldMetadata of type RELATION was not handling
settings update properly ;
- we need to delete existing fieldMetadata corresponding to the UUID
foreignKey as they are not needed anymore. This is handled as a 0.53
upgrade command as 0.53 will also come with the full removal of the old
relation system
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Co-authored-by: Etienne <45695613+etiennejouan@users.noreply.github.com>
Co-authored-by: prastoin <paul@twenty.com>
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