[dneto0]

The MAX const array size is 2047.

The driver compiler can take a long time compiling the MAX case. For example a laptop with an Intel Gen12 LP GPU with the Mesa driver can take 28s to compile the shader. This exceeds Chrome's GPU watchdog timeout (10s) and the test will fail.

Instead of completely disabling the test, split it into cases for MAX, MAX/8, and MAX/64 elements. This lets us skip the very largest cases, but still attempt smaller bug significant array sizes. That lets us get some signal that the large-ish const arrays are viable.

The additional runtime for the new cases are insignificant compared to the full case.

Fixed: #4496

Issue: #

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Requirements for PR author:

• All missing test coverage is tracked with "TODO" or .unimplemented().
• New helpers are /** documented */ and new helper files are found in helper_index.txt.
• Test behaves as expected in a WebGPU implementation. (If not passing, explain above.)
• Test have be tested with compatibility mode validation enabled and behave as expected. (If not passing, explain above.)

Requirements for reviewer sign-off:

• Tests are properly located in the test tree.
• Test descriptions allow a reader to "read only the test plans and evaluate coverage completeness", and accurately reflect the test code.
• Tests provide complete coverage (including validation control cases). Missing coverage MUST be covered by TODOs.
• Helpers and types promote readability and maintainability.

When landing this PR, be sure to make any necessary issue status updates.

[petermcneeleychromium]

This looks great.