Refactor plots to use plotly.js instead of chart.js (part of DSEGOG-57)

[louise-davies]

Description

Motivation for this change is DSEGOG-57 - Plotly has the rangebreaks feature which can implement the skip non-working hours feature. That change will be in a follow up PR to try and keep this PR smaller as it's already a behemoth!

Overall the plots should work identically to before - the only difference I can note is that we can't easily properly limit the zoom/pan range to the range of the data anymore. But since that only affects zoom/panning I decided it's not that big of a deal as the user can just choose to keep within bounds or not.

I had to rearrange some of the styling in the windows to accomodate Plotly to ensure the plot is correctly responsive and fills up the container as it is supposed to.

Also, some minor improvements in the playwright tests - we now use a better screenshot method (it takes two screenshots and if they're not the same it will continue taking subsequent screenshots until the page is stable before comparing). Also changed it so that Webkit screenshots are no longer huge - this is due to the default DPI of Webkit being 2 instead of 1.

Testing instructions

• Review code
• Check Actions build
• Review changes to test coverage
• Test plotting, traces & image crosshairs functionality to ensure migration has not lost any functionality

Agile board tracking

connected to DSEGOG-57

[codecov]

Codecov Report

Attention: Patch coverage is 99.86357% with 1 line in your changes missing coverage. Please review.

Project coverage is 97.85%. Comparing base (e2cbc62) to head (9667265).

Files with missing lines	Patch %	Lines
src/windows/thumbnailSelector.component.tsx	99.05%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #564      +/-   ##
===========================================
- Coverage    97.86%   97.85%   -0.01%     
===========================================
  Files           94       94              
  Lines        12531    12496      -35     
  Branches      2025     2053      +28     
===========================================
- Hits         12263    12228      -35     
+ Misses         266      264       -2     
- Partials         2        4       +2     

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