symlink safeupdate to original path so as not to break any Data API usage

Author: encima

migrations/db/migrations/20260403172611_safeupdate-data-api-enable.sql

@@ -1,5 +1,4 @@
 -- migrate:up
-ALTER ROLE authenticator SET session_preload_libraries = '$libdir/plugins/safeupdate';
 ALTER ROLE postgres SET local_preload_libraries = '$libdir/plugins/safeupdate';
 
 ALTER ROLE postgres SET safeupdate.enabled = 0;

nix/ext/pg-safeupdate.nix

@@ -32,6 +32,7 @@ let
         mkdir -p $out/lib/plugins
         # Install versioned library
         install -Dm755 ${pname}${postgresql.dlSuffix} $out/lib/plugins/${pname}-${version}${postgresql.dlSuffix}
+        ln -sfn plugins/${pname}-${version}${postgresql.dlSuffix} $out/lib/${pname}-${version}${postgresql.dlSuffix}
 
         runHook postInstall
       '';

nix/tests/expected/roles.out

@@ -64,7 +64,7 @@ order by rolname;
 ----------------------------+-------------------------------------------------------------------------------------------------------------------------------
  anon                       | {statement_timeout=3s}
  authenticated              | {statement_timeout=8s}
- authenticator              | {"session_preload_libraries=\"$libdir/plugins/safeupdate\"",statement_timeout=8s,lock_timeout=8s}
+ authenticator              | {session_preload_libraries=safeupdate,statement_timeout=8s,lock_timeout=8s}
  dashboard_user             | 
  pg_checkpoint              | 
  pg_database_owner          | 

nix/tests/expected/z_multigres-orioledb-17_roles.out

@@ -61,7 +61,7 @@ order by rolname;
 ----------------------------+-------------------------------------------------------------------------------------------------------------------------------
  anon                       | {statement_timeout=3s}
  authenticated              | {statement_timeout=8s}
- authenticator              | {"session_preload_libraries=\"$libdir/plugins/safeupdate\"",statement_timeout=8s,lock_timeout=8s}
+ authenticator              | {session_preload_libraries=safeupdate,statement_timeout=8s,lock_timeout=8s}
  dashboard_user             | 
  pg_checkpoint              | 
  pg_database_owner          |