Make e2e tests to run from branch

[igoychev]

Which area(s) of Podkrepi.bg are affected? (leave empty if unsure)

TypeScript

Describe the Bug

Currently the e2e tests for a new branch are run from a newly built master instead from the new branch which contains the new code.

To Reproduce

1. Make a deliberate error in code so that the tests fail on localhost
2. Publish it as a new branch
3. See how tests will pass when "run tests" label is added

Expected Behavior

We need the tests on a branch to run from the branch itself, because there might be new tests adapted for the new code.

Which browser are you using? (if relevant)

No response

[dimitur2204]

@igoychev
I am not sure that this is the case, because I was recently making new e2e tests on #1336 and this run for example has 24 tests (https://github.com/podkrepi-bg/frontend/actions/runs/4157716833/jobs/7192414709).

This is the latest run from master (https://github.com/podkrepi-bg/frontend/actions/runs/4203735250/jobs/7293506065) and it has 23, meaning the one on the branch does actually run from the tests on the branch.

Where did you observe that?

[igoychev]

We saw the problem with these PRs:
After changing the english translations of donation and fees here: #1331 the tests passed, but then when merged in master, the tests started to fail.
So I had to fix them in a separate PR: #1345 where although fixed the tests executed by the workflow were still failing in the new branch, so I had to force the merge to master. Then in the master they passed well.

[imilchev]

The problem was caused because we were checking out the master branch instead of the PR commit. I fixed that for both the frontend and the api repos.