Add new property alwaysHandleTapTruncationAction to ASTextNode2 and ASTextNode.

[dirtmelon]

After this PR, ASTextNode and ASTextNode2 don't handle touches on additional attributed message if passthroughNonlinkTouches is YES. But sometimes we maybe want to handle these touches action, even if passthroughNonlinkTouches is YES.

So I add the new property alwaysHandleTapTruncationAction to ASTextNode and ASTextNode2, when alwaysHandleTapTruncationAction is YES, ASTextNode and ASTextNode2 always handle touches on additional attributed message.

[dirtmelon]

Could you please help to review this pr? Many thanks. @maicki @Adlai-Holler @garrettmoon @appleguy @nguyenhuy @bolsinga

[Adlai-Holler]

I can't remember why we decided not to call the delegate method if passthroughNonlinkTouchesEnabled again? I reviewed the original PR but it's not clear why that delegate call is a problem. @maicki What do you think of this diff?

[dirtmelon]

I found this issue, possibly because of this.Sometimes we don't want to handle these touch actions. @Adlai-Holler @maicki

[dirtmelon]

@nguyenhuy @Adlai-Holler Please review if possible.

[nguyenhuy]

@maicki ping

[maicki]

@dirtmelon Thanks for the PR!

I'm good with the change. Maybe let's use a different name that is more aligned with the callback method that is called like: alwaysHandleTruncationTokenTap and add as documentation to the property that if this is set to YES, the --[ASTextNodeDelegate textNodeTappedTruncationToken:]` callback will be called.

[dirtmelon]

@maicki I have renamed it, please review it again.

[ghost]

🚫 CI failed with log

[dirtmelon]

@nguyenhuy Could you please review it?

[nguyenhuy]

Also, can you please rebase with latest master to fix the CI issue?

[nguyenhuy]

LGTM now. Thanks for the contribution!