Replace deprecated Divider with HorizontalDivider in Jetchat

[amEya911]

What I have done and why

• Replaced deprecated Divider with HorizontalDivider in Jetchat's Profile.kt and Conversation.kt

androidx.compose.material3.Divider has been deprecated since Material3 1.2.0 in favor of HorizontalDivider. As an official Google sample, using deprecated APIs leads to developers copying outdated patterns into their own projects.

Fixes #1663

[gemini-code-assist]

Summary of Changes

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This pull request updates the Jetchat sample application by migrating from the deprecated Divider composable to the recommended HorizontalDivider. This change ensures that the sample adheres to current Material3 guidelines, preventing the propagation of outdated API usage in projects that might reference Jetchat as an example.

Highlights

• Deprecated API Replacement: Replaced the deprecated androidx.compose.material3.Divider with androidx.compose.material3.HorizontalDivider in Profile.kt and Conversation.kt to align with Material3 1.2.0 recommendations.

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Changelog

• Jetchat/app/src/main/java/com/example/compose/jetchat/conversation/Conversation.kt
  • Updated import from androidx.compose.material3.Divider to androidx.compose.material3.HorizontalDivider.
  • Replaced Divider with HorizontalDivider in the DayHeaderLine composable.
• Jetchat/app/src/main/java/com/example/compose/jetchat/profile/Profile.kt
  • Updated import from androidx.compose.material3.Divider to androidx.compose.material3.HorizontalDivider.
  • Replaced Divider with HorizontalDivider in the ProfileProperty composable.

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Code Review

This pull request replaces the deprecated Divider composable with HorizontalDivider in Conversation.kt and Profile.kt. The changes are correct and address the deprecation as intended.