[Quant] Remove all the dequant nodes when the ref module has multi input args (#90157)
**Summary**:
When converting a ref module into a quant module, `_lower_static_weighted_ref_module` pass assumes the `ref_node` only has 1 input node, and only remove the first `dequant` node. We add a check in this PR to ensure this is the case for `_lower_static_weighted_ref_module` pass.
**Test Plan**:
We only add a check in this PR, there is no new added test case.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/90157
Approved by: https://github.com/Xia-Weiwen, https://github.com/jgong5, https://github.com/jerryzh168
