Add Vertex Input checks for Shader Object

[spencer-lunarg]

From #10797 (comment)

1. Remove the if (!last_bound.pipeline_state) { from ValidateDrawVertexBinding
2. Make sure VkPositiveBestPracticesLayerTest.ShaderObjectDraw and NegativeShaderObject.MismatchedFormat64Components work correctly (fix tests)
3. Add a test for 04007 (ignore 04008)
4. Add a test for 06209 (that VU needs to be moved to a draw time VU in the spec, side issue)
5. Add a test for 02721