Clicking a plot annotation should pause the plot

[scottbell]

Closes #6443 #6214 #6458

Describe your changes:

Pause plot when clicking on plot annotation search result. Get rid of rectangles when resuming realtime data.

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• Is this change backwards compatible? For example, developers won't need to change how they are calling the API or how they've extended core plugins such as Tables or Plots.

Author Checklist

• Changes address original issue?
• Tests included and/or updated with changes?
• Command line build passes?
• Has this been smoke tested?
• Testing instructions included in associated issue OR is this a dependency/testcase change?

Reviewer Checklist

• Changes appear to address issue?
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[codecov]

Codecov Report

Merging #6446 (37e7d8a) into master (8fe0472) will increase coverage by 2.37%.
The diff coverage is 15.00%.

@@            Coverage Diff             @@
##           master    #6446      +/-   ##
==========================================
+ Coverage   52.46%   54.84%   +2.37%     
==========================================
  Files         626      626              
  Lines       26615    26630      +15     
  Branches     2403     2405       +2     
==========================================
+ Hits        13964    14605     +641     
+ Misses      11987    11361     -626     
  Partials      664      664              

Flag	Coverage Δ		*Carryforward flag
e2e-ci	39.35% <ø> (ø)		Carriedforward from b1198a3
e2e-full	51.08% <ø> (ø)		Carriedforward from b1198a3
e2e-stable	55.41% <ø> (?)
unit	49.19% <15.00%> (+0.01%)	⬆️

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
src/ui/layout/search/AnnotationSearchResult.vue	0.00% <0.00%> (ø)
src/plugins/plot/MctPlot.vue	37.46% <23.07%> (-0.15%)	⬇️

... and 84 files with indirect coverage changes

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[shefalijoshi]

Looks good!