refactor(common): use ColumnDesc::named when possible

[stdrc]

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What's changed and what's your intention?

A new constructor ColumnDesc::named seems to be introduced in #12535, this PR uses it to replace some designated initialization.

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added test labels as necessary. See details.
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
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• My PR changes performance-critical code. (Please run macro/micro-benchmarks and show the results.)

• My PR contains critical fixes that are necessary to be merged into the latest release. (Please check out the details)

Documentation

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Release note

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[codecov]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (16e3212) 68.13% compared to head (7ac466e) 68.21%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
src/connector/src/source/external.rs	0.00%	4 Missing ⚠️
src/frontend/src/handler/create_source.rs	88.23%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13574      +/-   ##
==========================================
+ Coverage   68.13%   68.21%   +0.07%     
==========================================
  Files        1513     1513              
  Lines      261031   260957      -74     
==========================================
+ Hits       177863   178019     +156     
+ Misses      83168    82938     -230     

Flag	Coverage Δ
rust	68.21% <87.23%> (+0.07%)	⬆️

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