FunctionStorage was not initialized with FunctionParamsProviderInterface #7450
Description
After #7417 was merged I tried to make a plugin for variadic pipe function (This may look tricky).
It would even work but FunctionStorage is not created for functions that are processed by FunctionParamsProviderInterface.
Without FunctionStorage will not created TemplateResult that matters for argument types inference.
After a "quick fix" I caught failing tests.
Can you answer the question why is FunctionStorage is not created?