fix inputbox style in AdvanceEndpointConfig

[Chamal1120]

• This fixes Issue under advanced configuration dialog content within the Endpoint page api-manager#4188

Changes:

• Change the variant to outlined in <FormControl /> MUI components that aren't using that style.
• Adjust the input property of the <Select /> components inside them to work with outlined variant.

Preview of how it looks now:

for REST APIs

for AI APIs

for MCP Servers

Documentations referred:

• To learn how to create REST APIs -> https://apim.docs.wso2.com/en/4.6.0/manage-apis/design/create-api/create-rest-api/create-a-rest-api/
• To learn how to create AI APIs -> https://apim.docs.wso2.com/en/4.6.0/manage-apis/design/create-api/create-ai-api/create-an-ai-api/#
• To learn how to create MCP Servers -> https://apim.docs.wso2.com/en/4.6.0/mcp/create-from-openapi/
• MUI Select component -> https://mui.com/material-ui/react-select/

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[tharikaGitHub]

Hi @Chamal1120, the tests are failing due to a different issue. Your changes are fine. Hence will be approving the PR.