- Combined fetchActiveAttempt &  fetchLatestExamAttempt into one function with an optional "sequenceId" variable. At the very least, this works without causing errors in non-exam-sequence views. Since the sequenceId is undefined in that case, due to the sequenceId needing to be extracted from the sequence page itself, we can at least still get the latest exam attempt data.
- To my best knowledge, we originally called for the attempt of an exam with a given sequenceId in order to get the latest attempt for an exam regardless of whether or not its active, such that the timer can be seen on non exam-sequence pages. However, we don't truly need the sequence_id for this.
- It's also possible that this was also designed this way so that we could make sure a learner hadn't started two exams at once, and so their "latest exam attempt" would pretain to the exam they started most recently. We already have safeguards for this in edx_exams (See: https://github.com/edx/edx-exams/blob/main/edx_exams/apps/core/api.py#L201).

- also removed timerEnds param from TimerProvider useEffect, replaced it with a lint ignore