fix(api_models): `wasm` build problems caused by `actix-multipart`

`wasm` build is failing because of adding `actix-multipart` dependency in `api-models`.

As we cannot change any dependencies in `wasm`, we will have to make changes to `api_models` to fix this.
<think>
PR Context:
- Title: fix(api_models): Fix `wasm` build problems caused by `actix-multipart`
- Merged: 2024-12-05T11:09:38Z
- Files changed: 4 files
- Commits: 4 commits

Implementation approach:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [x] Bugfix
- [ ] New feature
- [ ] Enhancement
- [ ] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->
Wasm build is failing because of adding `actix-multipart` dependency in `api-models`.

### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR modifies application configur
</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** fix(api_models): Fix `wasm` build problems caused by `actix-multipart` (#6747)
Files to modify:


**crates/api_models/src/events/user.rs**
  Modify existing code

**crates/api_models/src/user.rs**
  Modify existing code
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