planner: fix that vector index output empty result when pk is non-int type

[winoros]

What problem does this PR solve?

Issue Number: close #57627

Problem Summary:

What changed and how does it work?

When pk is clustered and non-int, the full range should be [MinNotNull, MaxValue]. But it's [MinInt64, MaxInt64] currently. So it will output an empty result.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
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Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

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[codecov]

Codecov Report

Attention: Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.

Project coverage is 73.4323%. Comparing base (bd20f66) to head (6c41ea2).
Report is 3 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #57629        +/-   ##
================================================
+ Coverage   72.8127%   73.4323%   +0.6195%     
================================================
  Files          1676       1676                
  Lines        463751     464662       +911     
================================================
+ Hits         337670     341212      +3542     
+ Misses       105205     102631      -2574     
+ Partials      20876      20819        -57     

Flag	Coverage Δ
integration	43.4434% <5.8823%> (?)
unit	72.1853% <82.3529%> (-0.0287%)	⬇️

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Components	Coverage Δ
dumpling	52.7673% <ø> (ø)
parser	∅ <ø> (∅)
br	45.4318% <ø> (-0.0061%)	⬇️

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[winoros]

I changed it to the highest priority.
Because when for the vector index path, the IsIntHandlePath can also be true. We need to use a new way to check the real pk path.

[winoros]

/retest

[winoros]

/retest