fix(core): Stringify available tools sent from vercelai

[nicohrubec]

Linear Ticket

The available tools sent from our SDKs should generally be in the format of a stringified array of objects (where an object stores information about a particular tool). This is true for all AI SDKs except Vercel, where we send an array of strings. This PR fixes this by parsing the available tool array and converting the whole array into a proper string representation.

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	24.6 kB	-	-
@sentry/browser - with treeshaking flags	23.09 kB	-	-
@sentry/browser (incl. Tracing)	41.26 kB	-	-
@sentry/browser (incl. Tracing, Profiling)	45.53 kB	-	-
@sentry/browser (incl. Tracing, Replay)	79.73 kB	-	-
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	69.4 kB	-	-
@sentry/browser (incl. Tracing, Replay with Canvas)	84.42 kB	-	-
@sentry/browser (incl. Tracing, Replay, Feedback)	96.58 kB	-	-
@sentry/browser (incl. Feedback)	41.27 kB	-	-
@sentry/browser (incl. sendFeedback)	29.27 kB	-	-
@sentry/browser (incl. FeedbackAsync)	34.2 kB	-	-
@sentry/react	26.29 kB	-	-
@sentry/react (incl. Tracing)	43.22 kB	-	-
@sentry/vue	29.09 kB	-	-
@sentry/vue (incl. Tracing)	43.03 kB	-	-
@sentry/svelte	24.61 kB	-	-
CDN Bundle	26.9 kB	-	-
CDN Bundle (incl. Tracing)	41.81 kB	-	-
CDN Bundle (incl. Tracing, Replay)	78.33 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback)	83.81 kB	-	-
CDN Bundle - uncompressed	78.84 kB	-	-
CDN Bundle (incl. Tracing) - uncompressed	124 kB	-	-
CDN Bundle (incl. Tracing, Replay) - uncompressed	240.03 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	252.79 kB	-	-
@sentry/nextjs (client)	45.34 kB	-	-
@sentry/sveltekit (client)	41.64 kB	-	-
@sentry/node-core	50.82 kB	-	-
@sentry/node	158.03 kB	+0.03%	+43 B 🔺
@sentry/node - without tracing	92.69 kB	+0.01%	+1 B 🔺
@sentry/aws-serverless	106.45 kB	+0.01%	+1 B 🔺

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[github-actions]

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	9,071	-	8,922	+2%
GET With Sentry	1,422	16%	1,350	+5%
GET With Sentry (error only)	6,168	68%	6,147	+0%
POST Baseline	1,222	-	1,205	+1%
POST With Sentry	528	43%	524	+1%
POST With Sentry (error only)	1,065	87%	1,072	-1%
MYSQL Baseline	3,372	-	3,368	+0%
MYSQL With Sentry	477	14%	517	-8%
MYSQL With Sentry (error only)	2,778	82%	2,772	+0%

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