Drop QDQ around MaxPool for opset 22 and stabilize ASAN build_x64

[Copilot]

Description

Extend MaxPool QDQ-drop handling to opset 22 and add corresponding optimizer test coverage.

Based on CI feedback from build_x64 ASAN, reduce the newly added MaxPool QDQ test footprint so the change remains validated for opset 22 without triggering AddressSanitizer out-of-memory failures in onnxruntime_test_all.

Motivation and Context

The original fix adds opset 22 support for dropping Q/DQ around MaxPool.
Follow-up feedback showed the ASAN job (build_x64, job 79519089498) failing due to memory exhaustion during the expanded test workload, not due to incorrect optimizer behavior.

This update keeps the intended functionality change (opset 22 support) while narrowing added test cases to preserve CI stability in ASAN-constrained environments.

[Copilot]

Pull request overview

This PR fixes a regression in the QDQ DropQDQ selector logic for MaxPool when models use newer ONNX opsets. Specifically, it extends MaxPool matching from only SinceVersion == 12 to also include SinceVersion == 22, restoring the ability to collapse DequantizeLinear -> MaxPool -> QuantizeLinear sequences for opset 22+ models.

Changes:

• Extend MaxPool supported versions to {12, 22} in the shared misc op versions map used by QDQ selector infrastructure.
• Update DropQDQNodesRules registration to allow MaxPool version 22 to match the positive-scale/no-int16 DropQDQ rule.
• Add a regression test verifying DropQDQ works for MaxPool in opsets 12 and 22 for both int8 and uint8.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
onnxruntime/test/optimizer/qdq_transformer_test.cc	Adds regression coverage to ensure QDQ is dropped around MaxPool for opsets 12 and 22 with int8/uint8.
onnxruntime/core/optimizer/qdq_transformer/selectors_actions/shared/utils.cc	Updates misc selector op-version map so MaxPool selections can match both version 12 and 22.
onnxruntime/core/optimizer/qdq_transformer/selectors_actions/qdq_selector_action_transformer.cc	Updates DropQDQ selector/action registration so the MaxPool drop rule applies to both version 12 and 22.

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[xadupre]

@copilot the issue is AddressSanitizer: Out of memory

[Copilot]

@copilot the issue is AddressSanitizer: Out of memory

Confirmed. I checked the failing build_x64 logs and the failure is AddressSanitizer: Out of memory in onnxruntime_test_all (8GB ASAN allocator exhaustion), not a MaxPool QDQ correctness failure. The test-footprint reduction for this PR is in commit a264401.