platform-support: GPUDirect RDMA list missing Network Operator 26.7.0 (validated with GPU Operator 26.7.0)

Summary

gpu-operator/platform-support.rst — "Support for GPUDirect RDMA" — does not list Network Operator 26.7.0. QA validation of GPU Operator 26.7.0 with Network Operator 26.7.0 has completed with all tests passing and no new issues, so the page is now behind the validated support matrix.

Current text

https://github.com/NVIDIA/cloud-native-docs/blob/208ee03/gpu-operator/platform-support.rst#L676-L685

The list stops at Network Operator 26.1.0:

- Ubuntu 24.04 and 22.04 LTS with Network Operator 26.1.0
- Red Hat Enterprise Linux 10.0 and 8.10 with Network Operator 26.1.0
- Red Hat Enterprise Linux 8.10 with Network Operator 25.10.0
...

The "Support for GPUDirect Storage" list (lines 695-696) is further behind, still naming only Network Operator 25.7.0.

Suggested change

Add the validated GPU Operator 26.7.0 + Network Operator 26.7.0 combination to the GPUDirect RDMA list (and to the GPUDirect Storage list if that scenario was in scope), naming the operating systems that were covered. Network Operator 26.7.0 is GA: https://docs.nvidia.com/networking/display/kubernetes2670/release-notes.html

While editing, the list would read more easily sorted newest-first with consistent trailing punctuation (some entries end in a period, others do not).