Extend white space in unicode.

[Shylock-Hg]

What type of PR is this?

• bug
• feature
• enhancement

What problem(s) does this PR solve?

Issue(s) number:

Close https://github.com/vesoft-inc/nebula-ent/issues/1714

Description:

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 .....

[codesigner]

Do we need a tck to cover this?

[Shylock-Hg]

Do we need a tck to cover this?

Test in ut.

[codecov-commenter]

Codecov Report

Base: 76.84% // Head: 76.84% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (830a0fc) compared to base (e1a0283).
Patch coverage: 89.47% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4959      +/-   ##
==========================================
- Coverage   76.84%   76.84%   -0.01%     
==========================================
  Files        1101     1101              
  Lines       81205    81227      +22     
==========================================
+ Hits        62405    62415      +10     
- Misses      18800    18812      +12     

Impacted Files	Coverage Δ
src/graph/util/ExpressionUtils.h	100.00% <ø> (ø)
src/graph/util/ExpressionUtils.cpp	94.51% <89.47%> (+0.23%)	⬆️
src/graph/context/Result.cpp	70.00% <0.00%> (-7.78%)	⬇️
src/graph/planner/match/StartVidFinder.cpp	87.50% <0.00%> (-5.84%)	⬇️
...eta/processors/session/SessionManagerProcessor.cpp	73.54% <0.00%> (-4.52%)	⬇️
src/common/thread/GenericWorker.h	80.76% <0.00%> (-3.85%)	⬇️
src/kvstore/raftex/Host.cpp	69.77% <0.00%> (-2.58%)	⬇️
src/meta/processors/parts/ListHostsProcessor.cpp	70.12% <0.00%> (-2.17%)	⬇️
src/parser/GraphScanner.h	92.63% <0.00%> (-2.00%)	⬇️
src/graph/session/GraphSessionManager.cpp	78.78% <0.00%> (-1.30%)	⬇️
... and 25 more

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