fix: TypeOid of interval

[xiangjinwu]

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What's changed and what's your intention?

As title

Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in ./risedev check (or alias, ./risedev c)

Refer to a related PR or issue link (optional)

[codecov]

Codecov Report

Merging #3500 (ab7ffb9) into main (3a9e9ae) will not change coverage.
The diff coverage is 40.00%.

@@           Coverage Diff           @@
##             main    #3500   +/-   ##
=======================================
  Coverage   74.39%   74.39%           
=======================================
  Files         768      768           
  Lines      107784   107784           
=======================================
  Hits        80185    80185           
  Misses      27599    27599           

Flag	Coverage Δ
rust	74.39% <40.00%> (ø)

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Impacted Files	Coverage Δ
src/frontend/src/handler/util.rs	87.23% <0.00%> (ø)
src/utils/pgwire/src/pg_extended.rs	77.73% <0.00%> (ø)
src/utils/pgwire/src/pg_field_descriptor.rs	76.92% <50.00%> (ø)
src/utils/pgwire/src/pg_protocol.rs	73.77% <100.00%> (ø)
src/storage/src/hummock/iterator/merge_inner.rs	89.37% <0.00%> (-0.63%)	⬇️
src/common/src/types/ordered_float.rs	24.70% <0.00%> (-0.20%)	⬇️
src/frontend/src/expr/utils.rs	99.24% <0.00%> (+0.25%)	⬆️
src/meta/src/manager/id.rs	96.62% <0.00%> (+0.56%)	⬆️

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