Fix QNN simulator failures after HadamardTransform support

[JakeStevens]

Summary:
With certain simulator setups, the custom hadamard transfrom could be imported multiple times.

Further, the QNN SDK version can crash due to repeated SDK version checks repeatedly loaded/unloaded libQnnHtp.so, corrupting native state. So, we now:

1. check to guard against multiple import
2. SDK build IDs are now cached per root

Differential Revision: D116043878

cc @cbilgin @psiddh

[pytorch-bot]

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❌ 2 New Failures

As of commit a8e784b with merge base ea3641d ():

NEW FAILURES - The following jobs have failed:

• Cadence Build & Test / hifi-build / hifi4 (gh)
  ##[error]Refusing to check out fork pull request code from a 'pull_request_target' workflow. This workflow runs with the base repository's GITHUB_TOKEN, secrets, default-branch cache scope, and runner access. Fetching and executing a fork's code in that trusted context commonly leads to "pwn request" vulnerabilities. To opt in, review the risks at https://gh.io/securely-using-pull_request_target and set 'allow-unsafe-pr-checkout: true' on the actions/checkout step.
• Cadence Build & Test / vision-build / vision (gh)
  ##[error]Refusing to check out fork pull request code from a 'pull_request_target' workflow. This workflow runs with the base repository's GITHUB_TOKEN, secrets, default-branch cache scope, and runner access. Fetching and executing a fork's code in that trusted context commonly leads to "pwn request" vulnerabilities. To opt in, review the risks at https://gh.io/securely-using-pull_request_target and set 'allow-unsafe-pr-checkout: true' on the actions/checkout step.

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[meta-codesync]

@JakeStevens has exported this pull request. If you are a Meta employee, you can view the originating Diff in D116043878.

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[psiddh]

Thanks @JakeStevens for putting this PR

[JakeStevens]

@chenweng-quic et al:

I am landing due to many internal tests breaking after the hadamard PR. I believe this is preferable to a revert.

If you have any concerns with this approach, we can resolve in follow up!

Thanks

[qti-horodnic]

Approving, thanks for fixing the issue rather than reverting.

[psiddh]

Thanks @qti-horodnic for confirming. and thank you @JakeStevens for your prompt fix . Lets merge