latentBridgeLookup property

Propagates every bridge registered in this environment's type lookup to target for native-object resolution.

Use case: stdlib modules (dart:math, dart:io, …) live in isolated per-stdlib environments to avoid lexical name collisions, but their native types (e.g. _Random) must still be discoverable from globalEnvironment.toBridgedInstance when a script passes a native instance through an interpreted function. Calling stdlibEnv.propagateBridgeTypesTo(globalEnvironment) after registration mirrors the type→bridge mapping without leaking the lexical name Random into globalEnvironment.

Mirror of tom_d4rt Environment.propagateBridgeTypesTo. The bridges of the stdlib libraries the script did NOT import, asked for a native value's type when every other pass misses (SCF44).

Imports govern which NAMES a script can write, not which members a value it already holds exposes: stdout.encoding is a Utf8Codec whatever the script imported. propagateBridgeTypesTo copies a module's type→bridge mappings here only when the module is imported, so without this a value whose bridge lives in an unimported library had no members at all. Set on the global environment by the module loader; the nearest one in the chain answers. Names are untouched — Utf8Codec stays unresolvable as a name.

structural asks for SCC49's suffix rule instead of a precise match; the caller asks it only after the imported scope's own suffix rule missed.