feat(spring): Add cache tracing instrumentation for Spring Boot 4

[adinauer]

📜 Description

This is the collection PR for the Cache Tracing stack. It contains the full diff of all changes. Individual PRs for review:

PR Stack (Cache Tracing)

• #5162 — Add SentryCacheWrapper and SentryCacheManagerWrapper
• #5163 — Add enableCacheTracing option
• #5164 — Add BeanPostProcessor and auto-configuration

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Adds auto-instrumentation for Spring's Cache abstraction, producing cache.get, cache.put, cache.remove, and cache.flush spans per the Sentry cache module spec.

• SentryCacheWrapper / SentryCacheManagerWrapper wrap Spring's Cache / CacheManager interfaces
• SentryCacheBeanPostProcessor auto-wraps all CacheManager beans
• Gated behind sentry.enable-cache-tracing=true (opt-in, default false)
• Target: Spring Boot 4 only (sentry-spring-7 + sentry-spring-boot-4 modules)

💡 Motivation and Context

Closes #4120

💚 How did you test it?

See individual PRs for test details.

📝 Checklist

• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• No breaking change or entry added to the changelog.

[adinauer]

PR Stack (Cache Tracing)

• #5161 — Collection PR (full diff → main)
• #5162 — Add SentryCacheWrapper and SentryCacheManagerWrapper
• #5163 — Add enableCacheTracing option
• #5164 — Add BeanPostProcessor and auto-configuration