Fix blockly checks for array inputs and return types (#2399)
Fix blockly checks for array inputs and return types (#2399)


switchinnovations/pxt,switch-education/pxt,Microsoft/pxt,playi/pxt,switch-education/pxt,playi/pxt,Microsoft/pxt,switchinnovations/pxt,Microsoft/pxt,switch-education/pxt,switch-education/pxt,Microsoft/pxt,switchinnovations/pxt,playi/pxt,playi/pxt,Microsoft/pxt,switch-education/pxt,switchinnovations/pxt