* Components: ignore type exports (for now).
This commit updates component translation to ignore type exports for now.
Components generated with `wit-component` contain type exports to give names to
types used within the component's functions based on the component's wit
definition.
The intention is to allow bindings to be generated with meaningful names
directly from a component. In the future, type exports (and imports) may be
used for more than this purpose to support things like resource types.
This commit effectively ignores type exports when translating the component as
they are not useful to executing a component at this time.
Closes#4415.
* Code review feedback.
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