[rakudo] When we had a multi foo() rather than a multi sub foo() we didn't call !SIGNATURE_BIND nor did we set the block type to Sub. Fix that.
[rakudo] When we had a multi foo() rather than a multi sub foo() we didn't call !SIGNATURE_BIND nor did we set the block type to Sub. Fix that.

git-svn-id: ebc29296f9ec9cd27706eb0497c26fede0e190b2@35762 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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