fix(api): remove environment id from get integration

[jainpawan21]

What changed? Why was the change needed?

When user is in development environment and go to production sendgrid integration, webhook URL is not showing because at API level, _environmentId is still development one and integration is not found in development env. Above case can be reproducesd for development integrations in the production environment.

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[SokratisVidros]

Does the environment come from the Novu-Environment-Id http header? Since we have separate integrations per environment, shouldn't the environment be set regardless but not from the header?

[jainpawan21]

Does the environment come from the Novu-Environment-Id http header? Since we have separate integrations per environment, shouldn't the environment be set regardless but not from the header?

environmentId comes with user session. Production integrations can be accessed from the development environment.

CleanShot.2024-09-13.at.22.54.57.mp4

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[jainpawan21]

@SokratisVidros

Could you please review this PR again?