Fix the wrong aspect ratio load

[wayfarer3130]

Context

The resize listener in OHIFCornerstoneViewport wasn't firing the resize most of the time on DICOM SR load because the wrong parameter was being applied.
Also added fixes to OHIFCornerstoneViewport to provide ready events for image rendered so that the tests can proceed properly. That allows testing the actual expansion/collapse of the viewport rendering properly because it is possible to know when it has been updated.
Finally, a tweak to the scrollbar size to reflect the number of images rather than being a constant size.

Changes & Results

Testing

This test only fails if one has added automatically opening of the measurement panel. I'm actually not sure how to reproduce this inside vanilla OHIF.

Find a study that has a non square image (SIIM Sally dataset with XC works) in fact any dataset with an SR saved is sufficient
Save a DICOM SR to the study
Double click the DICOM SR to load into 1x1 mode
Click the load button, watching the position of measurements. Often, previously, they wouldn't move, AND the aspect ratio of non-square images would change as actually viewed. This is not 100%, but was 20-50%

Checklist

PR

• [] My Pull Request title is descriptive, accurate and follows the
  semantic-release format and guidelines.

Code

• [] My code has been well-documented (function documentation, inline comments,
  etc.)

Public Documentation Updates

• [] The documentation page has been updated as necessary for any public API
  additions or removals.

Tested Environment

• [] OS:
• [] Node version:
• [] Browser:

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[codecov]

Codecov Report

Merging #3534 (df9e8de) into master (18156bb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3534   +/-   ##
=======================================
  Coverage   42.75%   42.75%           
=======================================
  Files          82       82           
  Lines        1450     1450           
  Branches      338      338           
=======================================
  Hits          620      620           
  Misses        667      667           
  Partials      163      163           

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[cypress]

Passing run #3376 ↗︎

0

36

0

0

0

Details:

Merge branch 'master' into fix/wrong-aspect-ratio-load-sr
Project: Viewers	Commit: df9e8def6c
Status: Passed	Duration: 03:51 💡
Started: Jul 18, 2023 7:58 PM	Ended: Jul 18, 2023 8:02 PM

_{This comment has been generated by cypress-bot as a result of this project's GitHub integration settings.}

[sedghi]

I remember this weird effect when I used throttle for resize, that is why I made it debounce, though throttle seem much more smooth, but it has these werid flickerings

OHIF-Viewer.1.webm