add cancel upcoming host activities in the UI

[ghernandez345]

For #27410

add UI for canceling upcoming host activities and displaying canceled activities in global and past activity feeds. This includes:

ability to cancel upcoming activity

Confirmation modal to cancel activity

new global activities when upcoming activities are canceled

new past activities when upcoming activities are canceled

• [x] Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes.
• [x] Added/updated automated tests
• [x] Manual QA for all new/changed functionality

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 33.33333% with 16 lines in your changes missing coverage. Please review.

Project coverage is 63.30%. Comparing base (caf5e6f) to head (896618c). Report is 26 commits behind head on main.

Files with missing lines	Patch %	Lines
...vityFeed/GlobalActivityItem/GlobalActivityItem.tsx	0.00%	16 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #27879      +/-   ##
==========================================
- Coverage   63.30%   63.30%   -0.01%     
==========================================
  Files        1769     1772       +3     
  Lines      169041   169068      +27     
  Branches     4834     4910      +76     
==========================================
+ Hits       107010   107023      +13     
- Misses      53681    53695      +14     
  Partials     8350     8350              

Flag	Coverage Δ
frontend	52.07% <33.33%> (-0.01%)	:arrow_down:

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

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

:rocket: New features to boost your workflow:

• :snowflake: Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• :package: JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.