Only insert intervals from the epochs table

[samuelbray32]

Description

Issue:

• Currently entries in any TimeIntervals table is inserted into IntervalList during IntervalList.insert_from_nwb_file
• This scoops up entries from things like FranklabOptogeneticEpochs and names them uniformative things like interval 1
• This then leads to errors when trying to identifying matching epochs during ingestion of TaskEpochs table

Fix:
Restricts ingestion to only entries from the time intervals table named epochs in the nwb file

Checklist:

• NA If this PR should be accompanied by a release, I have updated the CITATION.cff
• NA If this PR edits table definitions, I have included an alter snippet for release notes.
• NA If this PR makes changes to position, I ran the relevant tests locally.
• NA If this PR makes user-facing changes, I have added/edited docs/notebooks to reflect the changes
• I have updated the CHANGELOG.md with PR number and description.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.11%. Comparing base (32b6950) to head (8001dd4).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1484      +/-   ##
==========================================
- Coverage   71.12%   71.11%   -0.02%     
==========================================
  Files         114      114              
  Lines       13306    13307       +1     
==========================================
- Hits         9464     9463       -1     
- Misses       3842     3844       +2     

Flag	Coverage Δ
full-tests	71.11% <100.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.