E2E github action's `testOnPush` job is failing

The test on Push Job is failing because of the following reasons:
1. The dev server is running on the attached mode
2. Playwright is configured to spin a dev server on CI 

Workflow file: 
https://github.com/openmrs/openmrs-esm-patient-management/blob/main/.github/workflows/e2e.yml

Failing run: 
https://github.com/openmrs/openmrs-esm-patient-management/actions/runs/3995764975/jobs/6855012120

Steps to resolve:
1. Remove the WebServer config from the playwright config file
2. Update the `testOnPush` job to run the dev server in detached mode (add '&' symbol to the command)

`run: yarn start --backend "http://localhost:9000" &`

3. Update the `testOnPR` job to run the dev server. (refer to this file. Add the step after the browser installation. Start the dev server using `yarn start`)

- name: Run dev server
 run: yarn start &