fix(super-converter): normalize inline nodes in non-TOC docPartObj content (SD-2357)

[caio-pizzol]

Documents with non-TOC docPartObj SDTs (page numbers, bibliographies, cover pages) containing top-level inline nodes (bookmarkStart/bookmarkEnd, commentRangeStart/commentRangeEnd, permStart/permEnd) failed to load with Invalid content for node type documentPartObject.

• Add missing normalizeDocPartContent() call in genericDocPartHandler — the TOC handler already had this, but the generic path was missing it
• Expand the inline node type set to include commentRangeStart, commentRangeEnd, permStart, permEnd (previously only bookmarkStart/bookmarkEnd were handled)
• Add unit tests for generic handler normalization and all inline node types

Closes SD-2357

[linear]

SD-2357 BUG: Invalid content for DocumentPartObject

[github-actions]

Status: PASS

The PR looks clean from an OOXML spec perspective.

commentRangeStart / commentRangeEnd (§17.13.4.4, §17.13.4.3): These are cross-structure annotations that can appear both inside w:p (inline) and between block elements at the body level. Treating them as inline nodes that need wrapping when found at the sdtContent top level is a valid ProseMirror normalization — not a spec violation. The id attribute (required, ST_DecimalNumber) is correctly represented in the tests.

permStart / permEnd (§17.13.7.2, §17.13.7.1): Same story — cross-structure annotations per §17.13.2, so they can legitimately appear inside or between paragraphs. One nuance: permStart.id and permEnd.id are typed as ST_String (not ST_DecimalNumber like comments/bookmarks), but the tests use string '1' for both, so that's fine. The w:edGrp/w:ed attributes on permStart are optional, so the minimal { id: '1' } in tests is conformant.

bookmarkStart / bookmarkEnd: Pre-existing in the set, valid cross-structure annotations.

docPartGallery / docPartObj (§17.5.2.11, §17.5.2.13): No changes to how these are read — the PR only affects what happens to the translated content after the fact.

The normalization logic (wrapping bare cross-structure annotation nodes in a synthetic paragraph) is a ProseMirror schema requirement, not an OOXML round-trip concern, so no spec compliance issue there.

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