chore: Replaced aTimeout with waitUntil to address flaky tests

[spuppo-mux]

Closes https://github.com/muxinc/devextravaganza/issues/216

Changes to try to reduce test flakiness for Webkit runs.
For example on: https://github.com/muxinc/media-chrome/actions/runs/23017090932/job/66843131347

Also added a step to try to improve run time on job reruns, since they sometimes take more than 20 mins

Before changes (Run npx playwright install-deps step) :

After changes:

Note: changes inspired by these two posts microsoft/playwright - [Question] Speed up installing browsers in GitHub Actions and related actions/runner - man-db trigger severely stalls package installation on ubuntu-24.04 runners #4030

---

Note

Low Risk
Low risk: changes are limited to CI/CD workflow steps and test timing/await logic; main risk is longer test timeouts potentially masking legitimate hangs.

Overview
Stabilizes Playwright-driven unit tests and speeds up GitHub Actions runs. CI and CD workflows now remove man-db before Playwright dependency installs to reduce apt delays on Ubuntu runners.

Updates flaky tests to rely on waitUntil (with longer per-suite timeouts and explicit failure messages) instead of fixed aTimeout sleeps, and adds preload="auto" to the test video fixture to make state assertions more deterministic (notably on WebKit).

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.58%. Comparing base (3ea80df) to head (2aedbfd).
⚠️ Report is 297 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1284      +/-   ##
==========================================
- Coverage   78.55%   73.58%   -4.97%     
==========================================
  Files          59       56       -3     
  Lines       11080    13873    +2793     
  Branches        0      783     +783     
==========================================
+ Hits         8704    10209    +1505     
- Misses       2376     3631    +1255     
- Partials        0       33      +33     

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