Update AST mapper to traverse into imports with typeof
Update AST mapper to traverse into imports with typeof

Summary: If we encountered an import using a typeof, then the AST mapper would do nothing. We now no longer special case this.

Reviewed By: nmote

Differential Revision: D13513627

fbshipit-source-id: 50a1d9f521e3410c3e69b47f00e7130623bc8687

gabelevi/flow,mroch/flow,mroch/flow,facebook/flow,samwgoldman/flow,AgentME/flow,gabelevi/flow,popham/flow,samwgoldman/flow,popham/flow,popham/flow,mroch/flow,gabelevi/flow,popham/flow,popham/flow,AgentME/flow,gabelevi/flow,mroch/flow,samwgoldman/flow,samwgoldman/flow,mroch/flow,gabelevi/flow,samwgoldman/flow,facebook/flow,facebook/flow,samwgoldman/flow,samwgoldman/flow,AgentME/flow,AgentME/flow,popham/flow,mroch/flow,AgentME/flow,facebook/flow,mroch/flow,facebook/flow,gabelevi/flow,facebook/flow,popham/flow,gabelevi/flow,facebook/flow