Fix #6970 IDictionary<string, object> output schema inference

[michaelstaib]

• add Issue6970ReproTests to reproduce schema build failure for a nested IDictionary<string, object> output field
• map object and string-keyed object dictionary runtime types to AnyType in the built-in scalar lookup
• keep behavior covered by existing AnyTypeTests and dictionary binding test coverage

[github-actions]

Fusion Gateway Performance Results

Progress: 0/6 benchmarks completed — this report updates as each job finishes.

Simple Composite Query

	Req/s	Err%
Constant 2 (50 VUs)	pending	pending
Ramping 2 (0-500-0 VUs)	pending	pending

Response Times

	Min	Med	Avg	P90	P95	Max
Constant 2	pending	pending	pending	pending	pending	pending
Ramping 2	pending	pending	pending	pending	pending	pending

---

Deep Recursion Query

	Req/s	Err%
Constant 2 (50 VUs)	pending	pending
Ramping 2 (0-500-0 VUs)	pending	pending

Response Times

	Min	Med	Avg	P90	P95	Max
Constant 2	pending	pending	pending	pending	pending	pending
Ramping 2	pending	pending	pending	pending	pending	pending

---

Variable Batching Throughput

	Req/s	Err%
Constant 2 (50 VUs)	pending	pending
Ramping 2 (0-500-0 VUs)	pending	pending

Response Times

	Min	Med	Avg	P90	P95	Max
Constant 2	pending	pending	pending	pending	pending	pending
Ramping 2	pending	pending	pending	pending	pending	pending

---

Runner 2 = benchmarking-2

Run 22498990406 • Commit 641b598 • Sat, 28 Feb 2026 18:37:12 GMT