feat: allow MustPassRepeatedly decorator to be set at suite level

[maxcleme]

Relates to #1265

Aims to allow MustPassRepeatedly to be set at suite level programatically, similarly of FlakeAttempts.

[maxcleme]

Regarding the test, I'm not sure which way I should go

• either add a new cases in integration/_fixtures/decorations_fixture/flaky_repeated/flaky_repeated_fixture_suite_test.go, using suite config instead of node decorator
• edit integration/_fixtures/config_override_fixture/config_override_fixture_suite_test.go (which seems relevant?)
• same as internal/internal_integration/config_flake_attempts_test.go ?

@onsi any thoughts? 😁

[onsi]

i’ll try to take a closer look today but to unblock you:

• i’d definitely like an internal integration test - and it would be good to ensure that the override at the suite level plays nicely with any per-test values (happy to think through what the behavior should be with you. at first blush i’d say it should do whatever FlakeAttempts does.)
• the outside-in integration test is less crucial. one of the two you point out should be enough

[maxcleme]

@onsi I've added some tests, let me know what you think!

[onsi]

i just cut a release with this in it, thanks!