In the with_mongot_extension_* sharded suites (single_shard, sharded_collections, sharded_cluster), a $scoreFusion whose input pipeline is an extension $vectorSearch crashes with tripwire assertion 10535800 (document_source_score_fusion.cpp:109):

"The metadata dependency tracker determined $scoreFusion input pipeline does not generate score metadata, despite the input pipeline stages being previously validated as such."

The tassert is pipeline->generatesMetadataType(DocumentMetadataFields::kScore). LiteParsedScoreFusion::validate() asserts the input pipeline produces score metadata, but the fully-parsed pipeline disagrees on sharded topologies (it agrees on single node, where the same tests pass). featureFlagExtensionsInsideHybridSearch is OFF.

Affects any $scoreFusion + $vectorSearch pipeline on sharded. Surfaced by re-enabling tests under SERVER-131001; these are excluded on sharded only pending this fix:
- jstests/with_mongot/e2e/hybridSearch/score_fusion_lookup.js
- jstests/with_mongot/e2e/hybridSearch/hybrid_search_weights_test.js

Repro: run either test in with_mongot_extension_single_shard. Single-node passes.

Verified via Evergreen patch 6a514c65032630000750776c: single_node green; all 3 sharded tasks fail with tripwire 10535800.