fix(workflows): dart browser workflows

[Equartey]

This fixes an error of browser tests not being found when using the one liner dart run build_runner test -- -p chrome

Broke run command into two parts.

1. Build the test directory with args: dart run build_runner build test
2. Then run tests given a platform: dart test -p

Context:

Dart test browser suite was failing in CI after no changes to code base. Nor any external changes were identified.

Original error log

$ dart run build_runner test -- -p chrome
[INFO] Generating build script completed, took 192ms
[INFO] Reading cached asset graph completed, took 185ms
[INFO] Checking for updates since last build completed, took 583ms
[INFO] Running build completed, took 115ms
[INFO] Caching finalized dependency graph completed, took 171ms
[INFO] Creating merged output dir `/var/folders/jn/qqs9x2394pv1vg9gz8g77[INFO] Creating merged output dir `/var/folders/jn/qqs9x2394pv1vg9gz8g77y1r0000gr/T/build_runner_testSfcoaM/` completed, took 249ms
[INFO] Writing asset manifest completed, took 4ms
[INFO] Succeeded after 565ms with 0 outputs (0 actions)
Running tests...

00:30 +0 -1: loading test/web_test.dart [E]
  Failed to load "test/web_test.dart":
  Timed out waiting for browser to load test suite. Browser output:
  DevTools listening on ws://127.0.0.1:59560/devtools/browser/bcd54593-11ac-439c-992f-f877ec2afc60
  [1222/120743.551809:INFO:CONSOLE(7705)] "Dart test runner browser host running", source: http://localhost:59557/e23aT5xFkV7itXvRgzcmQu2X3EK9ucEj/packages/test/src/runner/browser/static/host.dart.js (7705)
  [1222/120743.575677:INFO:CONSOLE(7733)] "Starting suite http://localhost:59557/e23aT5xFkV7itXvRgzcmQu2X3EK9ucEj/test/web_test.html", source: http://localhost:59557/e23aT5xFkV7itXvRgzcmQu2X3EK9ucEj/packages/test/src/runner/browser/static/host.dart.js (7733)

To run this test again: /opt/homebrew/Cellar/dart/3.2.4/libexec/bin/dart test test/web_test.dart -p chrome --plain-name 'loading test/web_test.dart'
00:30 +0 -1: Some tests failed.

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