[docs-theme] Fix broken @see links in props interface tables

[dhruv7539]

Summary

• update SeeTag to render HTTP(S) values from @see as clickable anchor links
• add support for JSDoc {@link ...} syntax inside @see values
• preserve existing type-rendering behavior as fallback for non-link values

Why

Fixes #6553. In props interface tables, many @see tags are URL references, but they were being rendered through renderType(...), which is intended for TypeScript type expressions.

Validation

• pnpm nx compile @blueprintjs/docs-theme
• pnpm nx compile @blueprintjs/eslint-plugin
• pnpm nx lint @blueprintjs/docs-theme

(Executed with Node v22.14.0; repository prints an engine warning because it currently prefers Node >=24.11.0.)

[palantirtech]

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• Improvement (Improving existing functionality)
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Description

[docs-theme] Fix broken @see links in props interface tables

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[dhruv7539]

Addressed the changelog bot request in the latest push (36af5b9e7):

• added packages/docs-theme/changelog/@unreleased/pr-7832.v2.yml
• marked this as a fix with a link back to this PR

[dhruv7539]

/changelog

packages/docs-theme/changelog/@unreleased

• Feature (Adding new functionality)
• Improvement (Improving existing functionality)
• Fix (Fixing an issue with existing functionality)
• Break (Creating a new major version by breaking public APIs)
• Deprecation (Removing functionality in a non-breaking way)
• Migration (Automatically moving data/functionality to a new system)

Fix broken @see links in props interface tables

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🐛 Fixes

• Fix broken @see links in props interface tables (#7832)