Fix \yii\filters\Cors::actions when attached to a module

[timkelty]

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	❌

When attached to a module (vs a controller), \yii\filters\Cors::actions should use the ID defined by \yii\base\ActionFilter::getActionId, so that the controller ID is included.

The AuthMethod already does this properly: https://github.com/yiisoft/yii2/blob/master/framework/filters/auth/AuthMethod.php#L106

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 64.93%. Comparing base (4b0a02e) to head (72af09f).

Files	Patch %	Lines
framework/filters/Cors.php	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #20230   +/-   ##
=========================================
  Coverage     64.93%   64.93%           
  Complexity    11389    11389           
=========================================
  Files           430      430           
  Lines         36911    36912    +1     
=========================================
+ Hits          23969    23970    +1     
  Misses        12942    12942           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[terabytesoftw]

Please add line in CHANGELOG.md and tests.

Thks.

[samdark]

Thank you!

[samdark]

I've added a CHANGELOG. Doing another pull request with a test would be awesome.