This PR adds the remaining non-security integration tests for the
Streamable HTTP transport as outlined in #183 and left over from #486.
### Changes included:
- **Pagination**: Added cursor-based pagination tests for Prompts,
Resources, and Tools to `Abstract*IntegrationTest`.
- **Bad Request**: Added tests to verify that invalid cursor parameters
correctly throw an `McpException` with `INTERNAL_ERROR`.
- **Logging**: Added `LoggingIntegrationTestStreamableHttp` to
specifically test `setLevel` and logging message notifications over
Streamable HTTP.
*Note: Security (Allow/Deny) tests are intentionally excluded as
discussed in #486, pending further server auth model implementation.*
Co-authored-by: Pavel Gorgulov <devcrocod@gmail.com>
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