…d cross cancelling loader calls
## Description
Create an instance of map loader per widget to avoid one widget
cancelling calls of another widget.
Fixes https://github.com/appsmithorg/appsmith/issues/31819
## Automation
/ok-to-test tags="@tag.Maps"
### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results -->
> [!IMPORTANT]
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/8292557044>
> Commit: `cd13c989d8b911a064629bf1d8c683e09927d3b2`
> Cypress dashboard url: <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=8292557044&attempt=1"
target="_blank">Click here!</a>
> All cypress tests have passed 🎉🎉🎉
<!-- end of auto-generated comment: Cypress test results -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Enhanced the Map Widget to load maps more efficiently with the
introduction of `loadMapGenerator`.
- **Tests**
- Added Cypress tests to ensure the Map Widget loads correctly on the
canvas.
- **Refactor**
- Updated the Map Widget loading process for better performance and
flexibility.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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