create the x64 qnn python package as arm64ec so it can be published
publicly.

### Description
fix
https://dev.azure.com/onnxruntime/onnxruntime/_build/results?buildId=1461029&view=logs&j=3565c00d-48fa-5c65-7ab9-a05e12e29ed0&t=e43fe03a-689e-5dc5-9ad5-9f116eba3e9d&l=6341



### Motivation and Context
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Signed-off-by: Liqun Fu <liqfu@microsoft.com>

### Description
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Replace jcenter. It's deprecated and not responding.


### Motivation and Context
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- If it fixes an open issue, please link to the issue here. -->
Fix CIs

### Description
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Pins pytorch-lightning package to version 2.3.3 since version >=2.4.0
requires torch > 2.1.0 which is not compatible with cu118.


### Motivation and Context
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ORT 1.19 Release Preparation

### Description
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### Motivation and Context
We couldn't get enough A100 agent time to finish the jobs since today.
The PR makes the A100 job only runs in main branch to unblock other PRs
if it's not recovered in a short time.