Update toJson() method creation for integer type in CdpClientGenerator.

[pujagani]

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Description

Related to #8871. Fixes toJson() method's return type for integer parameters.

Motivation and Context

Sending the Cdp command using websocket requires the request to be serialized into Json string, and for this toJson() method of WindowID is used. The CdpClientGenerator generates classes based on the browser_protocol.

While creating WindowID class, the return type for toJson() method was String. As a result following error was received anytime WindowID was used,
WARNING: Unhandled type: {"id":6,"error":{"code":-32602,"message":"Invalid parameters","data":"Failed to deserialize params.windowId - BINDINGS: int32 value expected at position 16"}} .

The changes fix the serialization issue by ensuring Integer return type is added.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication