Fix namespace mismatch of ActionSequence

[mbrodala]

Module methods are copied into a generated trait which does not have any imports. Thus the generated namespace of the trait was used for the "ActionSequence" class. This did not match the actual namespace of that class. Fix this by using a FQCN instead.

Example error visible in VisualStudio Code:

Argument '2' passed to performOn() is expected to be of type Tests\Support_generated\ActionSequence|array|callable, Codeception\Util\ActionSequence given