GHA: Don't fail when gathering test coverage.
GHA: Don't fail when gathering test coverage.

This allows tests to pass even when cc-test-reporter fails.

Which is does, because it cant't handle weird very large file numbers
that phpdbg reports as covered during tests with code coverage.

Example of what phpdbg reports (Nette Tester's XML coverage output):
```
...
      <line num="88" type="stmt" count="1"/>
      <line num="91" type="stmt" count="1"/>
      <line num="21" type="stmt" count="1"/>
      <line num="1428172591" type="stmt" count="1"/>
      <line num="1702043749" type="stmt" count="1"/>
      <line num="1953391986" type="stmt" count="1"/>
      <line num="23" type="stmt" count="1"/>
      <line num="59" type="stmt" count="1"/>
      <line num="170535471" type="stmt" count="1"/>
      <line num="1948279909" type="stmt" count="1"/>
      <line num="539780197" type="stmt" count="1"/>
      <line num="75" type="stmt" count="1"/>
      <line num="79" type="stmt" count="1"/>
...
```

... which is very weird. So let's don't fail the whole test because of that.

smuuf/primi,smuuf/primi,smuuf/primi