refactor: make content color tint to icon

flexiui-core/src/commonMain/kotlin/com/highcapable/flexiui/component/Dropdown.kt

@@ -354,9 +354,10 @@ fun DropdownMenuItem(
         style = currentStyle,
         verticalAlignment = Alignment.CenterVertically
     ) {
-        CompositionLocalProvider(LocalTextStyle provides LocalTextStyle.current.copy(color = currentColor)) {
-            content()
-        }
+        CompositionLocalProvider(
+            LocalIconTint provides currentColor,
+            LocalTextStyle provides LocalTextStyle.current.copy(color = currentColor)
+        ) { content() }
     }
 }
 

flexiui-core/src/commonMain/kotlin/com/highcapable/flexiui/component/TextField.kt

@@ -683,8 +683,10 @@ private fun TextFieldDecorationBox(
     val animatedAlpha by animateFloatAsState(if (value.isNotEmpty()) 0f else 1f)
     Box(modifier = Modifier.alpha(animatedAlpha)) {
         CompositionLocalProvider(
-            LocalTextStyle provides LocalTextStyle.current.copy(color = placeholderContentColor)
-        ) { placeholder() }
+            LocalIconTint provides placeholderContentColor,
+            LocalTextStyle provides LocalTextStyle.current.copy(color = placeholderContentColor),
+            content = placeholder
+        )
     }
     innerTextField()
 }