fix tagless

[nevermore3]

What type of PR is this?

• bug
• feature
• enhancement

What problem(s) does this PR solve?

Issue(s) number:

Description:

getProp interface's behave is

before tagless
1、 if <vid + tag> exists in kvstore return value else 2
2、 if vid exisits in tagless vids return value else return nothing

after tagless
1、if <vid+tag> exists in kvstore return value else return nothing

When attribute clipping, if there is no specified tag at the vertex, all tags in the schema need to be added

How do you solve it?

Special notes for your reviewer, ex. impact of this fix, design document, etc:

Checklist:

Tests:

• Unit test(positive and negative cases)
• Function test
• Performance test
• N/A

Affects:

• Documentation affected (Please add the label if documentation needs to be modified.)
• Incompatibility (If it breaks the compatibility, please describe it and add the label.）
• If it's needed to cherry-pick (If cherry-pick to some branches is required, please label the destination version(s).)
• Performance impacted: Consumes more CPU/Memory

Release notes:

Please confirm whether to be reflected in release notes and how to describe:

ex. Fixed the bug .....

[dutor]

LGTM.

[shanlai]

the following cases still fail:
test seek by edge index[nba]
test seek by edge index[nba int vid]
test seek by edge with properties[nba]
test seek by edge with properties[nba int vid]