Disable Collection stub for newer doctrine/collections versions

[Mika56]

Refs #21 and #138

Rebased old commit on 2.x branch

This commit disables doctrine/collections stubs when the installed version of doctrine/collections is >=1.6.0, when they started adding their own, more correct, stubs

[orklah]

Thanks! It does make a lot of tests fail though

[Mika56]

Can you restart the tests?

php	low	stable	high
7.2	❌	❌	❌
7.3	❌	❌	❌
7.4	❌	❌	✅
8.0	❌	✅	✅

Seems to be broken on 7.2, 7.3, and low versions on 7.4 and 8.0. Probably something to do with the Doctrine version check.