[Task]: REST API & GraphQL OAuth2 response - Add support for expiresAt key

[NilanshBansal]

SubTasks

In our codebase we are only relying on expires_in or expires_at keys in the response to check for expiry time. We should update the code for handling the expiresAt key as well which will help all our customers automatically refresh their token without the need for explicitly adding the expiry time as an input.

Code references

appsmith/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/helpers/restApiUtils/helpers/OAuth2Utils.java

Lines 17 to 18 in 6d8c38f

	Object expiresAtResponse = response.get(Authentication.EXPIRES_AT);
	Object expiresInResponse = response.get(Authentication.EXPIRES_IN);

and

appsmith/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/constants/Authentication.java

Lines 20 to 21 in 6d8c38f

	public static final String EXPIRES_AT = "expires_at";
	public static final String EXPIRES_IN = "expires_in";

[alpha951]

Hey 👋, I'm looking for making my first contribution in appsmith . Could you please assign this issue to me?

[NilanshBansal]

Hey, this might not be required as most OAuth systems only use the keys that appsmith already handles for.

Can you please pick up some issues with the label Good First Issue.