Fixed keyboard appearing in SelectionContainer in iOS (#1448)

Fixed the keyboard appearing in SelectionContainer in iOS

<!-- Optional -->
Fixes: JetBrains/compose-multiplatform#4986

https://youtrack.jetbrains.com/issue/CMP-1554/iOS-Selection-Container-shows-keyboard-while-selecting-text
JetBrains/compose-multiplatform#5088

## Testing
Manual. Open Test App, go Components -> Selection, double tap any
selectable text, on-screen keyboard shouldn't appear.

## Release Notes
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Sections:
- Highlights
- Known issues
- Breaking changes
- Features
- Fixes

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- Multiple Platforms
- iOS
- Desktop
- Web
- Resources
- Gradle Plugin
-->
### Fixes - iOS
- Fixed the keyboard appearing when selecting from SelectionContainer


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compose/ui/ui/src/uikitMain/kotlin/androidx/compose/ui/platform/UIKitTextInputService.uikit.kt

@@ -306,7 +306,6 @@ internal class UIKitTextInputService(
             // then it means that showMenu() called in SelectionContainer without any textfields,
             // and IntermediateTextInputView must be created to show an editing menu
             attachIntermediateTextInputView()
-            textUIView?.becomeFirstResponder()
             updateView()
         }
         textUIView?.showTextMenu(