allow to set a list for specifying force CPU nodes (#22431)
### Description
This change allows to set EP option "forceCpuNodeNames" in which
includes a list of node names that will always be running on CPU.
Usage example:
```diff
opt.executionProviders[0] = {
name: "webgpu",
validationMode: 'wgpuOnly',
storageBufferCacheMode: 'bucket',
+ // force node "/model/embed_tokens/Gather" to be put on CPU
+ forceCpuNodeNames: "/model/embed_tokens/Gather"
};
```
