ExtraTokenBodyParameters, Fixes AB#3435741

[melissaahn]

Summary

AB#3435741

The getToken request of the webapps API requires that pairs coming in the extraParameters field will need to be sent for interactive and silent requests. We'll need to send these parameters:

• Through extra query parameters for interactive
• Through the form request body for the token endpoint for both interactive and silent.

This PR addresses the second point by creating the extraTokenBodyParameter field, which will be parameters added to the body of the token requests.

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[Copilot]

Pull request overview

This PR adds support for extraTokenBodyParameters, enabling additional string/string parameter pairs to be included in OAuth2 token request bodies for both interactive and silent token acquisition flows.

• Creates a new interface IHasExtraTokenBodyParameters to define the contract for classes carrying extra token body parameters
• Implements the interface in InteractiveTokenCommandParameters and BrokerSilentTokenCommandParameters classes
• Updates MsalBrokerRequestAdapter to serialize these parameters and pass them to BrokerRequest
• Extends the IPC schema in BrokerRequest with a new EXTRA_TOKEN_BODY_PARAMETER field

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
IHasExtraTokenBodyParameters.java	New interface defining the contract for retrieving extra token body parameters; contains a spelling error in documentation
InteractiveTokenCommandParameters.java	Implements IHasExtraTokenBodyParameters and adds extraTokenBodyParameters field; missing defensive copy getter
BrokerSilentTokenCommandParameters.java	Implements IHasExtraTokenBodyParameters and adds extraTokenBodyParameters field; missing defensive copy getter
MsalBrokerRequestAdapter.java	Updates both interactive and silent request methods to serialize and include extra token body parameters; contains code duplication and lacks test coverage
BrokerRequest.java	Adds new serialized field mExtraTokenBodyParameter to support IPC transmission of these parameters