fix(content): allow custom roles and aria attributes to be set on content

[brandyscarney]

Issue number: N/A

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What is the current behavior?

Setting a custom role on the ion-content element does not work.

What is the new behavior?

• Inherit attributes for the content element which allows a custom role property to be set
• Adds e2e tests for content, header, and footer verifying that the proper roles are assigned

Does this introduce a breaking change?

• Yes
• No

Other information

To test this PR:

1. Switch to the branch and navigate to the core/ directory
2. Make sure to run npx playwright install if it has not been updated recenly
3. Run npm run test.e2e src/components/content/test/a11y/
4. Verify that the tests pass
5. Remove my fix in core/src/components/content/content.tsx and run the test again
6. Verify that the should allow for custom role tests fail

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Name	Status	Preview	Comments	Updated (UTC)
ionic-framework	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 6, 2024 5:40pm

[thetaPC]

LGTM, just realized that there's no issue related to this. So disregard my previous request.