[js/webgpu] add bool type for Expand/Gather (#18615)
### Description
In [detr-resnet-50](https://huggingface.co/Xenova/detr-resnet-50) model,
it uses expand with bool type running on cpu ep.
| Kernel | Shape | Provider |
| -------- | ------- | ------- |
| Expand | "input_type_shape" :
[{"bool":[1,1,1,625]},{"int64":[4]}],"activation_size" :
"657","output_type_shape" : [{"bool":[1,1,625,625]}] |
CPUExecutionProvider |
After this change, it will run on jsep.
| Kernel | Shape | Provider |
| -------- | ------- | ------- |
| Expand | "input_type_shape" :
[{"bool":[1,1,1,625]},{"int64":[4]}],"activation_size" :
"657","output_type_shape" : [{"bool":[1,1,625,625]}] |
JsExecutionProvider |
