Visual Editor strips cross-reference ID from inline table caption

Bug description

Switching a .qmd from source to the Visual Editor (and back) strips the cross-reference ID from a table caption written in the inline form : Caption {#tbl-one}.
After the round-trip the caption becomes : Caption and @tbl-one no longer resolves.

The equivalent div form ::: {#tbl-two} ... ::: is preserved, so the bug is specific to the inline caption attribute syntax.

Originally reported in https://github.com/quarto-dev/quarto-cli/discussions/14514.

Steps to reproduce

1. Create issue.qmd:

   ---
   title: About
   format: html
   ---
   
   @tbl-one and @tbl-two
   
   | A | B | C |
   |---|---|---|
   | 1 | 2 | 3 |
   
   : Caption {#tbl-one}
   
   ::: {#tbl-two}
   
   | A | B | C |
   |---|---|---|
   | 1 | 2 | 3 |
   
   Caption
   
   :::
   

2. Open in the Visual Editor, make any edit (or just toggle and save).

3. Switch back to source.

Actual behavior

The {#tbl-one} attribute is removed from the caption:

| A   | B   | C   |
|-----|-----|-----|
| 1   | 2   | 3   |

: Caption

@tbl-one renders as ?@tbl-one and the cross-reference is broken.
The {#tbl-two} div form survives the round-trip unchanged.

Expected behavior

The Visual Editor should preserve {#tbl-one} on the table caption across round-trips, matching its behaviour for div-wrapped tables.

Your environment

• IDE: RStudio 2026.04.0 Build 526 (per discussion https://github.com/quarto-dev/quarto-cli/discussions/14514); also reproducible in VSCode / Positron Visual Editor.
• OS: Windows 11 (reporter); reproducible on macOS.

Start by reproducing the round-trip with the provided issue.qmd in the Visual Editor, comparing the inline caption form with the preserved div form. Trace the editor's source serialization for table captions and verify that switching views preserves {#tbl-one} and resolves @tbl-one after saving.