[fix](schema-change) Fix schema-change from non-null to null

[Lchangliang]

#32913

[doris-robot]

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[Lchangliang]

run buildall

[github-actions]

clang-tidy review says "All clean, LGTM! 👍"

[doris-robot]

TeamCity be ut coverage result:
Function Coverage: 36.30% (9132/25156)
Line Coverage: 27.78% (74228/267225)
Region Coverage: 26.72% (38310/143384)
Branch Coverage: 23.40% (19406/82918)
Coverage Report: http://coverage.selectdb-in.cc/coverage/216ec09940484c64c5f2c05b6c5857d8f68fa4ba_216ec09940484c64c5f2c05b6c5857d8f68fa4ba/report/index.html

[dataroaring]

LGTM

[github-actions]

PR approved by at least one committer and no changes requested.

[github-actions]

PR approved by anyone and no changes requested.

[Lchangliang]

run buildall

[github-actions]

clang-tidy review says "All clean, LGTM! 👍"

[doris-robot]

TeamCity be ut coverage result:
Function Coverage: 36.34% (9148/25171)
Line Coverage: 27.87% (74586/267584)
Region Coverage: 26.79% (38479/143620)
Branch Coverage: 23.48% (19495/83018)
Coverage Report: http://coverage.selectdb-in.cc/coverage/d857f09db163fc1e6b771899b92c230cdfab0c92_d857f09db163fc1e6b771899b92c230cdfab0c92/report/index.html

[gavinchou]

Print more details like size and some ids or names

[Lchangliang]

run buildall

[github-actions]

clang-tidy review says "All clean, LGTM! 👍"

[doris-robot]

TeamCity be ut coverage result:
Function Coverage: 36.35% (9150/25172)
Line Coverage: 27.88% (74607/267634)
Region Coverage: 26.79% (38488/143656)
Branch Coverage: 23.47% (19494/83046)
Coverage Report: http://coverage.selectdb-in.cc/coverage/9746d4fbfa46ed36f34ff3f14e82fbc96f641c69_9746d4fbfa46ed36f34ff3f14e82fbc96f641c69/report/index.html