Add missing focusRequester import in MoviesScreen

[reybeld94]

Motivation

• Fix an unresolved reference error caused by using Modifier.focusRequester(...) without importing the extension.
• Ensure the Play button in the movie details can receive focus correctly.

Description

• Added the missing import androidx.compose.ui.focus.focusRequester to MoviesScreen.kt.
• The change targets the focus handling for the Play Surface which calls .focusRequester(focusRequester).

Testing

• No automated tests were run as part of this change.
• The change is a single-line import addition and should allow the project to compile past the previous unresolved reference error.

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Codex Task