Fix infinite recursion in `resolveInvolvedNamespacesImpl` when two views mutually reference each
other via `$graphLookup` (or bare `$unionWith` / equality-style `$lookup`).

*Root cause*: `materializeViewSubpipeline()` creates the sub-pipeline with the backing-collection
NSS as `_originalParseNss`. The `inProgress` cycle-detection guard in `resolveSubpipelinesInRange`
was gated on `isView(subNss)`, which returns false for the backing collection, causing infinite
recursion on mutual view cycles.

*Fix*: Tag each materialized `OwnedLiteParsedPipeline` with the originating view NSS via
`setViewNssForCycleDetection()`. The resolver uses that NSS (falling back to `subNss`) for the
`inProgress` guard, so cycles are detected correctly regardless of which NSS the pipeline was
parsed under.

Also converts `MONGO_UNREACHABLE_TASSERT(12511900)` in `GraphLookUpStage::makePipeline()` to a
`uasserted(ErrorCodes::CollectionBecameView)` so the exhausted-retry-loop case is retriable rather
than a server crash.