iOS multitap selection in selection container

[mazunin-v-jb]

Proposed Changes

• Allow selecting text in Selection Container by double and triple tap on the text like in textfields.

Testing

Test: Open test app, go Components -> Selection, try to select text.

Issues Fixed

Fixes: https://youtrack.jetbrains.com/issue/COMPOSE-440/iOS-support-double-tap-text-selection-in-SelectionContainer

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[mazunin-v-jb]

Caught a rare, unstable and strange crash. It shouldn't be related to this PR, so I want to ensure that it's not a https://youtrack.jetbrains.com/issue/COMPOSE-478/fix-iOS-SelectionContainer first.
I'll keep that as a draft for now.

upd. couldn't reproduce it for several days. I think it's a non-related bug. I'll make this PR as ready for review.

[mazunin-v-jb]

So many changes from androidx-main in these files both refactoring and logical, I'll convert this PR to draft again. Need to check and adapt my changes.

[mazunin-v-jb]

Now should work as planned.
@dima-avdeev-jb, there is an issue with crush on calling the context menu, so we shouldn't merge it before your fix for that.

[MatkovIvan]

It seems like a lot of code without unit test coverage.
Also, I'd prefer sharing the code instead of copying it.

However, I'm not going to block this PR, just consider it as a future improvement.

[MatkovIvan]

Can we share the code instead of copy-pasting?

[mazunin-v-jb]

We can as well as the other copy-paste, but I thought it would be better to have as less common code changes as possible.