[Bug]: Unable to switch network Linea Seploia in webpack build

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### Describe the bug

When attempting to switch to the Linea Sepolia test network in a branch with a webpack build, the operation fails. However, this functionality works correctly in the regular build. The issue needs to be investigated and resolved to ensure consistent behavior across different builds.

### Expected behavior

Should be able to switch network

### Screenshots/Recordings

https://github.com/user-attachments/assets/82c06314-e786-47b6-8e51-c2a499de2082

### Steps to reproduce

1. Run the webpack build command to compile the project.
`yarn webpack `
2. Open the application in a web browser.
3. Navigate to the network settings.
4. Attempt to switch to the Linea Sepolia test network.

### Error messages or log output

_No response_

### Detection stage

In production (default)

### Version

12.4.1

### Build type

None

### Browser

Chrome

### Operating system

MacOS

### Hardware wallet

_No response_

### Additional context

_No response_

### Severity

_No response_

Reproduce the failure by running `yarn webpack`, opening the application in Chrome, and attempting to switch to Linea Sepolia from network settings; compare this with the regular build where switching works. Inspect the webpack build path and network-switching entry points, then verify that Linea Sepolia switching succeeds consistently in the webpack build.

Written by the indexing model from the issue text.