Add the Wasm browser target explicitly to resolve an error

```
:compose-multiplatform-html-unified-material2 is not configured for JS usage
```

A related warning should also have been resolved:

```
w: ⚠️ JS Environment Not Selected
```

Author: ShreckYe

buildSrc/src/main/kotlin/common-conventions.gradle.kts

@@ -30,12 +30,17 @@ kotlin {
     iosSimulatorArm64()
 
     @OptIn(ExperimentalWasmDsl::class)
-    wasmJs()
+    wasmJs {
+        browser()
+    }
 
 
     // for JS and HTML wrappers
 
-    js()
+    js {
+        // The project works without this, but it can be added to avoid potential issues.
+        browser()
+    }