test: failing test for long URLs broken by table column wrapping

[nickveenhof]

Problem

Long URLs in markdown table cells get split across multiple lines when the column is too narrow. The split breaks the URL: it is no longer a single clickable string, and the rendered output shows a truncated URL on one line with the remainder on the next.

Related: anomalyco/opencode#18394

What this PR does

Adds a single failing test that reproduces the problem. No fix included.

Test output

bun test src/renderables/__tests__/Markdown.test.ts --test-name-pattern "table with long URL"

The test expects the full URL to appear intact in the rendered table. Instead, the renderer splits it:

│Exam│https://github.com/charmbracelet/glamour/issues/     │
│ple │149#issuecomment-1234567890 (https://github.com/     │
│    │charmbracelet/glamour/issues/149#issuecomment-       │
│    │1234567890)                                          │

The 74-character URL is split at the column boundary. The "Name" column value "Example" is also split into "Exam" / "ple" across rows.

Expected behavior

Long URLs should either:

1. Remain intact as a single OSC 8 hyperlink span across the line break
2. Be rendered as a footnote below the table
3. Truncate with an ellipsis while keeping the full URL in the link metadata