Support Astro 6

[JPeer264]

Description

Astro 6 is out: https://astro.build/blog/astro-6/

Let's see if our @sentry/astro SDK is Astro 6 compatible

[linear-code]

JS-1917

[Lms24]

Some initial work on this: #19745

[Lms24]

It seems like there's a bug in Astro 6.0.2 that breaks Astro server islands on the node adapter: withastro/astro#15753

Our e2e tests are running into this because we test against server islands on node. I suggest we skip these for now and re-enable them once the bug was fixed in Astro.

[Lms24]

There also seems to be a second bug that might relate to our tests needing adjustments for catch-all routes: withastro/astro#15840 though I still need to look into this more thoroughly

[CyberFlameGO]

On Cloudflare Workers, Sentry seems to break the whole worker with "Unknown Server Error" being presented when trying to access an Astro website (note: this does not affect miniflare/local testing)

[Lms24]

@CyberFlameGO is this purely related to Astro 6?

[CyberFlameGO]

As far as I can tell, yes - I only updated my Sentry-Cloudflare/Astro configuration today (to remove the Pages middleware from my worker/add the sentry server config, since I had noticed that the middleware instructions had been removed for when in a Workers setup) when upgrading to Astro 6/upgrading all my dependencies, so I believe it is related to Astro 6. A common error I saw (which didn't stop the site from actually building, but only occurred when the Sentry integration was enabled) was [ERROR] TypeError: addEventListener(): useCapture must be false. (in the "prerendering static routes" phase), and Sentry couldn't seem to determine a source map reference, which is in line with a Vite warning at around this phase of building:

21:05:06.120 | [sentry-vite-plugin] Info: Successfully uploaded source maps to Sentry
-- | --
21:05:06.130 | 08:05:06 [vite] ✓ built in 6.36s
21:05:06.134 | [sentry-vite-plugin] Info: Sending telemetry data on issues and performance to Sentry. To disable telemetry, set `options.telemetry` to `false`.
21:05:11.914 | 08:05:11 [assets] Copying fonts (4 files)...
21:05:14.169 | 08:05:14 [WARN] [vite] [plugin @tailwindcss/vite:generate:build] Sourcemap is likely to be incorrect: a plugin (@tailwindcss/vite:generate:build) was used to transform files, but didn't generate a sourcemap for the transformation. Consult the plugin documentation for help