Fix demo CI / Cleanup webserver startup

[andrewvc]

Fixes CI to:

1. Stop running e-commerce demo (commented out until we get the demo server back online)
2. Properly publish JUnit results
3. Pass in --params flag instead of old --suite-params flag
4. Pass in port numbers for the dev webserver more cleanly, using synthetics.config.ts value in hooks.ts

The CI tests were failing previously in a hard to understand way because we had continue_on_error set in the pipeline, but that was skipping not a test failure but a bad argument. The --quite-exit-code flag handles this much more cleanly.

[github-actions[bot]]

Todos Unit Tests

0 files  ±0  0 suites  ±0   0s :stopwatch: ±0s 0 tests ±0  0 :heavy_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit 294bd227. ± Comparison against base commit 6fc9ae33.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

ECommerce Unit Tests

  1 files  ±0  3 suites  ±0   2s :stopwatch: -1s 13 tests ±0  0 :heavy_check_mark: ±0  10 :zzz: ±0  3 :x: ±0 

For more details on these failures, see this check.

Results for commit 9e1d516d. ± Comparison against base commit 6fc9ae33.

[github-actions[bot]]

Todos Junit Results

  1 files    4 suites   1s :stopwatch: 18 tests 18 :heavy_check_mark: 0 :zzz: 0 :x: 19 runs  19 :heavy_check_mark: 0 :zzz: 0 :x:

Results for commit 652d660b.

[github-actions[bot]]

Unit Test Results

  1 files    4 suites   1s :stopwatch: 18 tests 18 :heavy_check_mark: 0 :zzz: 0 :x: 19 runs  19 :heavy_check_mark: 0 :zzz: 0 :x:

Results for commit 386a4421.

[github-actions[bot]]

Todos Unit Results

  1 files    4 suites   1s :stopwatch: 18 tests 18 :heavy_check_mark: 0 :zzz: 0 :x: 19 runs  19 :heavy_check_mark: 0 :zzz: 0 :x:

Results for commit 4c11af57.

:recycle: This comment has been updated with latest results.