Support append row kinds and historical row updates

[JingsongLi]

What changes

Close verified gaps in the existing PyPaimon Native write/update path, using current Java behavior.

• Support rowkind.field on append and data-evolution tables, including CHAR/VARCHAR fields. Check required values before filtering; reject surviving DELETE/UPDATE_BEFORE events; honor ignore-delete and ignore-update-before before routing or materializing Blob inputs. Keep append files free of KV system fields.
• Accept rowkind.field with INPUT changelogs for primary-key tables and preserve the exact generated events. Resolve the event column once per batch and preserve its identity through reordered write types.
• Allow row-ID, predicate, shard, DELETE and matched-only MERGE operations over historical read views. Partial files retain their historical schema/field IDs and messages retain the captured snapshot as the conflict baseline. Captured empty views stay empty.
• Match updated columns to global-index metadata by field identity from each file's schema. Handle renamed columns, dropped/readded names, extra indexed fields and complete-row updates with omitted write_cols.

Ordinary write/commit entry points, upserts and MERGE clauses which can INSERT continue to reject historical handles. Publish historical update messages through a current table. No new public API or dependency.

Java references

• AppendOnlyFileStoreTable.newWrite, TableWriteImpl.writeAndReturn, RowKindGenerator, RowKindFilter, and AppendOnlyWriter.write.
• Spark MergeIntoPaimonDataEvolutionTable.withMatchedUpdateScanOptions, partial update write type, captured read snapshot and global-index update policy.

Verification

• Reproduced append acceptance/schema guards and renamed index-policy failures before their fixes.
• Rust 1.98.0 Core library: 4320 passed, 7 ignored.
• Append, historical update, filtered input and retained-delete integrations: 17 passed.
• Python binding library (embedded Python; no extension installation): 104 passed.
• Rust 1.98.0 Core and Python binding Clippy, all targets, -D warnings.
• cargo fmt --all -- --check and diff checks.

Companion Python PR: apache/paimon#10668 (draft). Its Native CI continues building Rust main and depends on this PR.

Review follow-up

• Include read metadata when validating MERGE table-source columns, so independent source snapshots can join on _ROW_ID without borrowing the target view. Added committed-result and empty-source regressions.
• Replace obsolete historical-updater rejection assertions with real partial-update/delete commits, while retaining ordinary writer/commit guards.

Follow-up verification: 64 related Rust integration tests passed; Core/Python binding all-target Clippy on Rust 1.98.0, fmt and diff checks passed. Independent review found no remaining actionable regression in the reviewed changes.

[leaves12138]

LGTM