Test suite: Fix overeager monkey-patching of the sinon.stub return value that made sinon.createStubInstance() return an object with getCall and getCalls methods.
Test suite: Fix overeager monkey-patching of the sinon.stub return value that made sinon.createStubInstance() return an object with getCall and getCalls methods.

unexpectedjs/unexpected-sinon,unexpectedjs/unexpected-sinon