chore: Updating the function icon on JS editor (#37340)

## Description

Updating the function icon on JS editor to use the below icon:

https://www.figma.com/design/8L9BXMzNTKboGWlHpdXyYP/Appsmith-IDE?node-id=3320-86616&t=m7Tv72GIRzKZCugh-4


Fixes [#37331](#37331)

## Automation

/ok-to-test tags="@tag.JS"

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!TIP]
> 🟢 🟢 🟢 All cypress tests have passed! 🎉 🎉 🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/11811778322>
> Commit: 1e8555b
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=11811778322&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.JS`
> Spec:
> <hr>Wed, 13 Nov 2024 07:03:04 UTC
<!-- end of auto-generated comment: Cypress test results  -->


## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Introduced a new JavaScript function icon (`js-function-v2`) for
enhanced visual representation in the application.
	- Added a new icon for data sources (`DataSourcesIconV2`).
- Updated dropdown options for JavaScript functions to improve
organization and accessibility.

- **Bug Fixes**
- Adjusted the icon rendering logic to ensure the correct icon is
displayed based on the feature flag.

- **Documentation**
- Improved clarity in the action selection interface for JavaScript
functions and their arguments.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->