[fix](cloud) Keep delete rowset schemas rowset-local

[Yukang-Lian]

What problem does this PR solve?

Issue Number: None

Related PR: #62867

Problem Summary: Delete rowsets can carry only the columns needed by their predicates and omit indexes after a light schema change. MetaService treated those inline schemas as authoritative: commit and restore paths could write them to shared schema KV, while get-rowset and retry collision paths could reuse them for normal rowsets with the same schema version. This could produce schema mismatches and fail later normal rowset commits. Keep delete rowset schemas inline and rowset-local, and exclude them from shared schema writes and reuse in both legacy and versioned metadata modes.

Release note

Prevent Cloud MetaService delete rowsets from corrupting or being reused as shared tablet schemas.

Check List (For Author)

• Test: Unit Test
  • ./run-cloud-ut.sh --run --filter=meta_service_test:MetaServiceTest.DeleteRowsetSchemaStaysRowsetLocal -j 32
  • ./build.sh --cloud -j 32
• Behavior changed: Yes (delete rowset inline schemas are no longer shared across rowsets)
• Does this need documentation: No

Co-authored-by: Siyang Tang tangsiyang@selectdb.com

[hello-stephen]

Thank you for your contribution to Apache Doris.
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[Yukang-Lian]

run buildall