wp-now: improve php tests and comment failing tests

[sejas]

What?

Fix tests.
Fix Mac Os wp-cli path error.
Fix php tests after playground mode was introduced.

Testing instrucitons

• Run npx nx test wp-now
• Tests should pass.

[wojtekn]

@sejas I've tried tests locally and they went successfully.

I tried uncommenting those from execute-php.spec.ts and now they still work fine. It crashes for me only when I uncomment 'wp-cli command' tests.

[wojtekn]

Great finding @sejas ! We may remove two unnecessary imports from packages/wp-now/src/tests/execute-php.spec.ts and should be good to go.

[sejas]

@wojtekn Thanks for reviewing it!

I moved some php tests to wp-now.spec.ts and deleted the unnecessary imports.

The issue we had was that after the playground mode was introduced, the php tests competed with wp-now.spec.ts tests to download WordPress returning random errors.