Fix media type assignment (was uppercased)

web/core/src/jsMain/kotlin/androidx/compose/web/css/CSSMediaRule.kt

@@ -11,7 +11,7 @@ interface CSSMediaQuery {
     }
     data class MediaType(val type: Enum) : Atomic {
         enum class Enum {
-            All, Print, Screen, Speech
+            all, print, screen, speech
         }
 
         override fun toString() = type.name

web/core/src/jsTest/kotlin/MediaQueryTests.kt

@@ -27,6 +27,9 @@ class MediaQueryTests {
 
             media(minWidth(300.px), maxWidth(500.px)) {
             }
+
+            media(CSSMediaQuery.MediaType(CSSMediaQuery.MediaType.Enum.screen).and(minWidth(300.px))) {
+            }
         }
     }
 
@@ -74,6 +77,12 @@ class MediaQueryTests {
             "@media (min-width: 300px), (max-width: 500px)",
             (CombinedMediaQueries.cssRules[2] as CSSMediaRuleDeclaration).header
         )
+
+        assertEquals(
+            "@media screen and (min-width: 300px)",
+            (CombinedMediaQueries.cssRules[3] as CSSMediaRuleDeclaration).header
+        )
+
     }
 
 }