fix: invoke_oci_api fails for LogSearchClient.search_logs bug

[dustin-sale]

Description

Fix invoke_oci_api pagination for OCI responses that expose records through results, including oci.loggingsearch.LogSearchClient.search_logs.

The generic OCI SDK paginator assumes non-list response models expose items, which caused SearchResponse.results calls to fail. This change uses the server’s response-shape-aware pagination loop for bounded and unbounded requests, preserves DNS/Object Storage handling, and retains unbounded SDK limit pass-through semantics.

Dependencies: none.

Fixes #356

Type of change

• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• make lint
• make test project=oci-cloud-mcp-server — 199 passed; 91.75% coverage
• Live read-only LogSearchClient.search_logs calls against the supplied Phoenix log group, covering empty SearchResponse.results for bounded and unbounded paths

Test Configuration:

• Firmware version: N/A
• Hardware: macOS development machine
• Toolchain: Python 3.13.13, UV
• SDK: OCI Python SDK 2.179.0

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules