feat(message-parser): add GFM table support

[ggazzo]

Proposed changes (including videos or screenshots)

Adds GFM-style table support across the message parser and the renderer.

Parser (@rocket.chat/message-parser)

The parser now recognizes tables and emits new TABLE, TABLE_ROW, and TABLE_CELL AST nodes:

| Header 1 | Header 2 |
| -------- | :------: |
| Cell 1   | Cell 2   |

Behavior:

• Column alignment is read from the delimiter row: :--- (left), :--: (center), ---: (right), --- (none).
• Inline markup (bold, italic, links, emoji, …) is supported inside cells.
• A leading and trailing pipe is required on every row; rows without surrounding pipes fall back to a paragraph.
• A literal pipe inside a cell must be escaped as \|.

AST shape:

{ type: 'TABLE', value: { header: TableCell[], rows: TableRow[] } }
{ type: 'TABLE_ROW', value: TableCell[] }
{ type: 'TABLE_CELL', align: 'left' | 'center' | 'right' | undefined, value: Inlines[] }

Renderer (@rocket.chat/gazzodown)

• Renders the new table nodes using Fuselage's Table / TableHead / TableBody / TableRow / TableCell components.
• Cell alignment is translated to Fuselage's start / center / end.
• Tables are rendered striped.
• Message previews show a compact single-row rendering of the table header.
• Added a Table story (and a table block in the Example story) to Markup.stories.tsx.

Steps to test or reproduce

Parser:

1. cd packages/message-parser
2. yarn jest tests/table.test.ts

Renderer (visual):

1. yarn turbo run build --filter=@rocket.chat/gazzodown
2. yarn workspace @rocket.chat/gazzodown storybook
3. Open the Markup stories → Table / Example.

Or paste in a message:

| Name | Status | Score |
| :--- | :----: | ----: |
| Alice | **done** | 9.5 |
| Bob | :smile: | 7 |

Further comments

Tables require surrounding pipes in this first iteration to keep the grammar unambiguous against the existing inline | (spoiler) syntax.

[dionisio-bot]

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[changeset-bot]

🦋 Changeset detected

Latest commit: 910e733

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 8 packages

Name	Type
@rocket.chat/gazzodown	Major
@rocket.chat/message-parser	Minor
@rocket.chat/meteor	Patch
@rocket.chat/core-services	Patch
@rocket.chat/core-typings	Patch
@rocket.chat/livechat	Patch
@rocket.chat/rest-typings	Patch
rocketchat-services	Patch

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[codecov]

Codecov Report

❌ Patch coverage is 58.66667% with 31 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.21%. Comparing base (32880c4) to head (910e733).
⚠️ Report is 6 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #41109      +/-   ##
===========================================
+ Coverage    70.15%   70.21%   +0.06%     
===========================================
  Files         3368     3369       +1     
  Lines       130022   130366     +344     
  Branches     22543    22690     +147     
===========================================
+ Hits         91216    91542     +326     
- Misses       35492    35506      +14     
- Partials      3314     3318       +4     

Flag	Coverage Δ
unit	70.21% <58.66%> (+0.08%)	⬆️

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[ggazzo]

Follow-up: #41110 adds a graceful block-level fallback (degrade unsupported blocks to their raw source text instead of null), so renderers that don't implement tables yet — e.g. mobile — don't silently drop the content.