feat(tanstackstart-react): Enable tanstack router tracing integration by default

[nicohrubec]

WIP

[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	9,387	-	8,432	+11%
GET With Sentry	1,759	19%	1,645	+7%
GET With Sentry (error only)	6,165	66%	5,458	+13%
POST Baseline	1,197	-	1,169	+2%
POST With Sentry	592	49%	550	+8%
POST With Sentry (error only)	1,028	86%	1,016	+1%
MYSQL Baseline	3,306	-	3,241	+2%
MYSQL With Sentry	434	13%	368	+18%
MYSQL With Sentry (error only)	2,690	81%	2,593	+4%

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