bugfix: don't widen the type conditions in the NadelServiceTypeFilter…

[temaEmelyan]

…Transform

Please make sure you consider the following:

• Add tests that use __typename in queries
• Does this change work with all nadel transformations (rename, type rename, hydration, etc)? Add tests for this.
• Is it worth using hints for this change in order to be able to enable a percentage rollout?
• Do we need to add integration tests for this change in the graphql gateway?
• Do we need a pollinator check for this?

[github-actions]

Test Results

  663 files  +  663    663 suites  +663   1m 9s ⏱️ + 1m 9s
2 227 tests +2 227  1 663 ✅ +1 663  564 💤 +564  0 ❌ ±0 
2 235 runs  +2 235  1 671 ✅ +1 671  564 💤 +564  0 ❌ ±0 

Results for commit 78faa13. ± Comparison against base commit 81a0db2.