fix: add patching container for multiline input on ios

[lukewalczak]

Fixes: #2799

Summary

PR adds the absolutely positioned container which is kind of the patch for a TextInput to avoid covering input label with its value.

Test plan

1. Use TextInput with prop multiline
2. Set height in style
3. Type some text within input, which contains more space that set height
4. Expect: input's value should not cover the label

[github-actions]

The mobile version of example app from this branch is ready! You can see it here

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[callstack-bot]

Hey @lukewalczak, thank you for your pull request 🤗. The documentation from this branch can be viewed here.

[github-actions]

The mobile version of example app from this branch is ready! You can see it here

.

[github-actions]

The mobile version of example app from this branch is ready! You can see it here

.

[github-actions]

The mobile version of example app from this branch is ready! You can see it here

.

[lukaszKowal-datasite]

Hi @lukewalczak
I think setting https://github.com/callstack/react-native-paper/pull/2979/files#diff-e4a748a69d38ea7aa878ad43d572a9e9b451e1cf72a5635c7e71112437e1a195R344
will manipulate theme colours?

I am having following result on iOS multiline input:

Obviously the grey bar should not be there.

[lukewalczak]

@lukaszKowal-datasite thanks for feedback. Could you please send simple snack, to make it easier for me to debug it?

[Svarto]

@lukaszKowal-datasite @lukewalczak same issue for me, when there is no label on a TextInput then there is a grey box covering the actual text.