[BUG]Noon Connector V2 API Failure - Missing order_category in Authorize flow

### Bug Description

The Noon Connector V2 API is failing in the payment flow with the error “Missing required param: order_category.” This happens because the connector_metadata is not being extracted properly in the V2 confirm-intent flow, which causes the order_category field to be None. 

### Expected Behavior

The Noon Connector V2 API should extract order_category from connector_metadata during the payment flow. When a request with valid connector_metadata is sent, the order_category value should be passed correctly to the connector, and the payment should proceed without errors.

### Actual Behavior

The connector_metadata is not being extracted in the V2 payment flow, causing the `order_category` field to be None. As a result, the API returns the error `Missing required param: order_category`, and the payment flow fails to complete.

### Steps To Reproduce

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### Context For The Bug

_No response_

### Environment

Are you using hyperswitch hosted version? Yes/No
If yes, please provide the value of the `x-request-id` response header to help us debug your issue.

If not (or if building/running locally), please provide the following details:
1. Operating System or Linux distribution:
2. Rust version (output of `rustc --version`): ``
3. App version (output of `cargo r --features vergen -- --version`): ``


### Have you spent some time checking if this bug has been raised before?

- [x] I checked and didn't find a similar issue

### Have you read the Contributing Guidelines?

- [x] I have read the [Contributing Guidelines](https://github.com/juspay/hyperswitch/blob/main/docs/CONTRIBUTING.md)

### Are you willing to submit a PR?

Yes, I am willing to submit a PR!
<think>
PR Context:
- Title: fix(payments): add connector metadata parsing and order category to payment router data
- Merged: 2025-10-16T10:25:01Z
- Files changed: 8 files
- Commits: 2 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
The Noon Connector V2 API is failing in the payment flow with the error `Missing required param: order_category.` This happens because the connector_metadata is not being extracted in the V2 confirm-intent flow, which causes the order_category field to be None. The fix involves co
</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** fix(payments): add connector metadata parsing and order category to payment router data (#9825)
Files to modify:


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

**crates/hyperswitch_domain_models/src/payments.rs**
  Remove:
    - function: pub::get_optional_connector_metadata

**crates/hyperswitch_domain_models/src/payments/payment_intent.rs**
  Modify existing code

**crates/router/src/core/payments/operations/payment_update_intent.rs**
  Modify existing code

**crates/router/src/core/payments/transformers.rs**
  Modify existing code

**crates/router/src/core/utils.rs**
  Modify existing code

**crates/router/src/services/kafka/payment_intent.rs**
  Modify existing code

**crates/router/src/services/kafka/payment_intent_event.rs**
  Modify existing code
{"issue_number": 9824, "pr_number": 9825, "commits_count": 1, "files_changed": 8, "response_length": 1600, "file_count": 10, "needs_breakdown": false}