JSR fails to render correct Overview for tsx files

[AljoschaMeyer]

Jsr shows top-level docs (via a @module jsdoc directive) in its Overview tab for each package. If the entrypoint to a module is a .tsx file, however, such an @module comment is not parsed correctly, and the readme file is shown in the Overview tab instead. A quick look at the sources passed to jsr reveals that the .tsx file is precompiled into a regular .ts file, and this process prepends some jsdoc comments/pragmas at the very start of the file. That probably breaks the logic for determining whether the module entrypoint has a dedicated doc comment to render as the overview.

Example in production:

• https://jsr.io/@macromania/macromania-html@0.2.0 renders the readme in the Overview tab, whereas
• https://jsr.io/@macromania/macromania-html@0.2.1 renders the proper doc comment.

The only difference between version 0.2.0 and 0.2.1 of that package is that the module entrypoint in the prior is a .tsx file, and a .ts file in the latter.