Set correct size of `attr::output_layouts` when the graph has multiple outputs in JIT oneDNN fuser (#88496)
Bug:
Previously, `initOutputLayouts()` was called after creating a graph and before merging other nodes. It is a vector with one element. So when a graph contains multiple outputs, e.g. using AOTAutograd compile in my case, layout_propagation pass try to access out of range elements in the vector. Then it comes to the second bug in `useOpaqueLayout()`, the out of range checks the index with the updated output size instead of the size of the vector. Then used `[]` to access the element, which is out of range.
Fixes the above two issues:
1. check the offset is within range with the size of `attr::output_layouts` vector instead of another variable. This check catches the error now.
2. change the place to initial `attr::output_layouts` after node merging. The graph may change with node merging. Thus we moved the initialization in layout_propagation with the complete graph.
Added test time:
`Ran 1 test in 0.383s`
Pull Request resolved: https://github.com/pytorch/pytorch/pull/88496
Approved by: https://github.com/jgong5, https://github.com/sanchitintel
