Don't use the pretty-printed type name, because that's intended for
diagnostics, not for a theoretically machine-readable format like SemIR.
Types are always constants, so omit the leading `constant.` on the type
instruction name.
Don't format the *type of* the function `F` as `"F"`. Instead use
`"<type of F>"`.
Also improve instruction naming for function and generic class name
values: name the value after the function or generic class, and add a
`.type` suffix to the type.
Check the parameters specified in a name qualifier against the
parameters of the entity that the qualifier refers to.
For interfaces, this required adding minimal support for parameterized
interface names.
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Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
Richard Smith
