feat(trace): highlight strict mode violation elements in the snapshot

[dgozman]

This is fixing a case where the test failed with strict mode violation, but all the matched elements are not highlighted in the trace.

For example, all the buttons will be highlighted when the following line fails due to strict mode violation:

await page.locator('button').click();

To achieve this, we mark elements during querySelector phase instead of inside onBeforeInputAction. This allows us to only mark from inside the InjectedScript and remove the other way of marking from inside the Snapshotter.

[github-actions]

Test results for "tests 1"

1 flaky

⚠️ [playwright-test] › ui-mode-test-watch.spec.ts:145:5 › should watch all

36408 passed, 758 skipped
✔️✔️✔️

Merge workflow run.