Enable scan data directly

[Shylock-Hg]

Introduction

After #5082 , we could avoid OOM caused by scanning all data. So remove the limit number checking of ScanVertices and ScanEdges.

Contents

Related work

[czpmango]

Good catch!
At present, the implementation of statements like MATCH (v) RETURN v relies on the optimizer and brings too many problems. It is nothing special and we really should unify the implementation of all patterns(eg. we should let the optimizer decide whether to generate full scan nodes).