[MAINTENANCE] Fix all Integrations lints.

[Swiddis]

Is your feature request related to a problem?
Since the new Lint action was introduced by Eric, there are lots of lint issues lying dormant in Integrations. This is a catchall issue for fixing these "zombie lints", as indicated in e.g. this PR feedback.

What solution would you like?
There are four parts to the integration codebase that can be fixed together or separately. The majority of them should be autofixable, but some will require some manual tweaking:

• Adaptor Backend server/adaptors/integrations
• Routing server/routes/integrations
• React Frontend public/components/integrations
• Cypress Tests .cypress/integration/integrations_test

What alternatives have you considered?
N/A

Do you have any additional context?
N/A

[Swiddis]

Routing lints covered as part of #1381