fix(browseragent): changing cookiesEnabled field to pointer type

[gmanandhar-nr]

Description

Currently, if user send the value for cookiesEnabled as false for browser agent, that is currently being ignored, and the default value of true is being used. Fixed it by changing the boolean field to a pointer.
Fixes # (issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
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• This change requires a documentation update

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