Remove unnecessary Material3 experimental opt-ins

Many Material3 APIs are now stable, so the `ExperimentalMaterial3Api` and `ExperimentalMaterial3ExpressiveApi`
opt-ins are not required anymore at those places. Also remove the propagating `@ExperimentalMaterial3Api`
marker from `TopAppBarScrollBehaviorLayout`, which does not use experimental API anymore.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/HomeView.kt

@@ -22,8 +22,6 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.plus
 import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.foundation.lazy.rememberLazyListState
-import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
 import androidx.compose.material3.FabPosition
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.material3.rememberTopAppBarState
@@ -150,7 +148,6 @@ fun HomeView(
     }
 }
 
-@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 private fun HomeScaffold(
     state: HomeState,
@@ -325,7 +322,6 @@ private fun HomeFloatingActionButton(
     }
 }
 
-@OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
 private fun HomeBottomBar(
     currentHomeNavigationBarItem: HomeNavigationBarItem,

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/components/HomeTopBar.kt

@@ -25,7 +25,6 @@ import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.statusBarsPadding
 import androidx.compose.foundation.pager.VerticalPager
 import androidx.compose.foundation.pager.rememberPagerState
-import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.IconButtonDefaults
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.material3.TopAppBarScrollBehavior
@@ -100,7 +99,6 @@ import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.collections.immutable.toImmutableList
 
-@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun HomeTopBar(
     selectedNavigationItem: HomeNavigationBarItem,
@@ -449,7 +447,6 @@ private fun StatusEmojiBadge(
     }
 }
 
-@OptIn(ExperimentalMaterial3Api::class)
 @PreviewsDayNight
 @Composable
 internal fun HomeTopBarPreview() = ElementPreview {
@@ -470,7 +467,6 @@ internal fun HomeTopBarPreview() = ElementPreview {
     )
 }
 
-@OptIn(ExperimentalMaterial3Api::class)
 @PreviewsDayNight
 @Composable
 internal fun HomeTopBarSpaceFiltersSelectedPreview() = ElementPreview {
@@ -491,7 +487,6 @@ internal fun HomeTopBarSpaceFiltersSelectedPreview() = ElementPreview {
     )
 }
 
-@OptIn(ExperimentalMaterial3Api::class)
 @PreviewsDayNight
 @Composable
 internal fun HomeTopBarSpacesPreview() = ElementPreview {
@@ -512,7 +507,6 @@ internal fun HomeTopBarSpacesPreview() = ElementPreview {
     )
 }
 
-@OptIn(ExperimentalMaterial3Api::class)
 @PreviewsDayNight
 @Composable
 internal fun HomeTopBarWithIndicatorPreview() = ElementPreview {
@@ -533,7 +527,6 @@ internal fun HomeTopBarWithIndicatorPreview() = ElementPreview {
     )
 }
 
-@OptIn(ExperimentalMaterial3Api::class)
 @PreviewsDayNight
 @Composable
 internal fun HomeTopBarWithStatusPreview() = ElementPreview {
@@ -560,7 +553,6 @@ internal fun HomeTopBarWithStatusPreview() = ElementPreview {
     )
 }
 
-@OptIn(ExperimentalMaterial3Api::class)
 @PreviewsDayNight
 @Composable
 internal fun HomeTopBarMultiAccountPreview() = ElementPreview {

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/search/RoomListSearchView.kt

@@ -26,7 +26,6 @@ import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.text.input.TextFieldLineLimits
-import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.TextFieldDefaults
 import androidx.compose.runtime.Composable
@@ -88,7 +87,6 @@ internal fun RoomListSearchView(
     }
 }
 
-@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 private fun RoomListSearchContent(
     state: RoomListSearchState,