fix: move file to correct folder

[ozyx]

Closes #7653

Describe your changes:

The .npmignore for the openmct-e2e subpackage was included in a different folder by accident when I was experimenting with a different folder structure for the recent import/export fixes. This fixes the mistake.

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Is this a notable change that will require a special callout in the release notes? For example, will this break compatibility with existing APIs or projects that consume these plugins?

Author Checklist

• Changes address original issue?
• Tests included and/or updated with changes?
• Has this been smoke tested?
• Have you associated this PR with a type: label? Note: this is not necessarily the same as the original issue.
• Have you associated a milestone with this PR? Note: leave blank if unsure.
• Testing instructions included in associated issue OR is this a dependency/testcase change?

Reviewer Checklist

• Changes appear to address issue?
• Reviewer has tested changes by following the provided instructions?
• Changes appear not to be breaking changes?
• Appropriate automated tests included?
• Code style and in-line documentation are appropriate?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49.11%. Comparing base (a3fb84a) to head (d3b17b8).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7652      +/-   ##
==========================================
+ Coverage   49.09%   49.11%   +0.02%     
==========================================
  Files         671      671              
  Lines       27114    27114              
  Branches     2632     2632              
==========================================
+ Hits        13312    13318       +6     
+ Misses      13474    13468       -6     
  Partials      328      328              

Flag	Coverage Δ
unit	49.11% <ø> (+0.02%)	⬆️

see 3 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a3fb84a...d3b17b8. Read the comment docs.