[5.1] [ModuleInterface] Escape Type
and Protocol
when they're type members
#24241
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Previously, we wouldn't escape
Type
andProtocol
at all in theASTPrinter, which lead to unfortunate build failures while compiling an
interface.
Instead, make sure we escape them whenever we print a name that's a type
member. Except for methods, which are erroneously allowed to be called
Type
andProtocol
.rdar://49858651