[Trusted Types] Don't check trust subtyping in quick_subtype if trust is not being checked"
[Trusted Types] Don't check trust subtyping in quick_subtype if trust is not being checked"

Summary: We were spuriously checking trust of literals in `quick_subtype` even when trust mode was not being checked.

Reviewed By: mvitousek

Differential Revision: D15339460

fbshipit-source-id: f02e91061471c65f408a0ec9902e60969df87dbd

nmote/flow,nmote/flow,nmote/flow,nmote/flow,nmote/flow,nmote/flow,nmote/flow