[BUGFIX lts] Pass the event parameter to sendAction

[ssutar]

This fixes the regression introduced in 3.4.x, where the input actions were not passed with event object as parameter.

For example

{{input key-down="keyDown"}}

And

...
actions: {
  keyDown(value, event) {
    if (event.keyCode === SOME_KEY_CODE) {
      // DOES NOT WORK starting 3.4.x since `event` is undefined
    }
  }
}

For more details: #16989

Please note that passing actions like key-down="keyDown" is deprecated, the closure actions should be used instead like key-down=action("keyDown")

[rwjblue]

I'm not sure I follow this. We generally haven't exposed the event before, right? Why change it now?

[rwjblue]

Based on the comments in #16989 this is a regression (though it generally surprises me). We need to track down the source (and see what versions it affects).

[ssutar]

From my investigation this is happening starting from 3.4.x

[rwjblue]

Chatted with @ssutar, he tracked down the regression to #16744. /cc @cibernox