fix(core): Keep all property values in baggage header

[chargome]

https://www.w3.org/TR/baggage/#example contains an example where properties can include an =, e.g. key3=value3; propertyKey=propertyValue

This PR updates our baggage parsing to not swallow these property values

closes #17845

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	24.26 kB	+0.11%	+25 B 🔺
@sentry/browser - with treeshaking flags	22.77 kB	+0.11%	+23 B 🔺
@sentry/browser (incl. Tracing)	40.45 kB	+0.06%	+22 B 🔺
@sentry/browser (incl. Tracing, Replay)	78.83 kB	+0.04%	+24 B 🔺
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	68.47 kB	+0.04%	+23 B 🔺
@sentry/browser (incl. Tracing, Replay with Canvas)	83.5 kB	+0.04%	+26 B 🔺
@sentry/browser (incl. Tracing, Replay, Feedback)	95.69 kB	+0.03%	+22 B 🔺
@sentry/browser (incl. Feedback)	40.97 kB	+0.06%	+22 B 🔺
@sentry/browser (incl. sendFeedback)	28.91 kB	+0.1%	+27 B 🔺
@sentry/browser (incl. FeedbackAsync)	33.85 kB	+0.08%	+26 B 🔺
@sentry/react	25.98 kB	+0.08%	+19 B 🔺
@sentry/react (incl. Tracing)	42.42 kB	+0.06%	+24 B 🔺
@sentry/vue	28.77 kB	+0.09%	+23 B 🔺
@sentry/vue (incl. Tracing)	42.26 kB	+0.07%	+27 B 🔺
@sentry/svelte	24.29 kB	+0.1%	+24 B 🔺
CDN Bundle	25.77 kB	+0.09%	+21 B 🔺
CDN Bundle (incl. Tracing)	40.33 kB	+0.06%	+22 B 🔺
CDN Bundle (incl. Tracing, Replay)	76.58 kB	+0.04%	+27 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback)	82.08 kB	+0.03%	+20 B 🔺
CDN Bundle - uncompressed	75.35 kB	+0.08%	+56 B 🔺
CDN Bundle (incl. Tracing) - uncompressed	119.36 kB	+0.05%	+56 B 🔺
CDN Bundle (incl. Tracing, Replay) - uncompressed	234.52 kB	+0.03%	+56 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	247.28 kB	+0.03%	+56 B 🔺
@sentry/nextjs (client)	44.42 kB	+0.06%	+23 B 🔺
@sentry/sveltekit (client)	40.87 kB	+0.07%	+26 B 🔺
@sentry/node-core	50.49 kB	+0.05%	+22 B 🔺
@sentry/node	154.11 kB	+0.02%	+19 B 🔺
@sentry/node - without tracing	92.33 kB	+0.01%	+9 B 🔺
@sentry/aws-serverless	106.05 kB	+0.02%	+20 B 🔺

View base workflow run

[Lms24]

Thanks a lot for fixing this!
Could you add or adjust one of the browser integration tests as well? I believe we already have a test that shows how we deal with 3rd party baggage values but it doesn't include the more complex entries with properties.

[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	8,828	-	8,960	-1%
GET With Sentry	1,345	15%	1,359	-1%
GET With Sentry (error only)	5,945	67%	5,987	-1%
POST Baseline	1,188	-	1,189	-0%
POST With Sentry	502	42%	495	+1%
POST With Sentry (error only)	1,055	89%	1,056	-0%
MYSQL Baseline	3,270	-	3,283	-0%
MYSQL With Sentry	407	12%	410	-1%
MYSQL With Sentry (error only)	2,662	81%	2,663	-0%

View base workflow run

[Lms24]

Thanks!