Set isValid = false in INITIAL_PIN_ELEMENT_STATE

See details in this linear ticket:
https://linear.app/joinforage/issue/FX-780/fix-isvalid-default-state-in-android-sdk#comment-fdd01c3a

forage-android/src/test/java/com/joinforage/forage/android/core/element/state/ElementStateManagerTest.kt

@@ -16,9 +16,9 @@ class ElementStateManagerTest {
         assertThat(state.isValid).isEqualTo(INITIAL_PIN_ELEMENT_STATE.isValid)
         assertThat(state.isComplete).isEqualTo(INITIAL_PIN_ELEMENT_STATE.isComplete)
         assertThat(state.validationError).isEqualTo(INITIAL_PIN_ELEMENT_STATE.validationError)
-        // TODO: Compiler is very confused about accessing the state.details for the PIN
-        // This test fails because of it
-        assertThat(state.details).isEqualTo(INITIAL_PIN_ELEMENT_STATE.details)
+        // cast to Any? to avoid ambiguous overload issue that
+        // is unique to PinDetails because it's an alias for `Nothing?`
+        assertThat(state.details as Any?).isEqualTo(INITIAL_PIN_ELEMENT_STATE.details)
     }
 
     @Test

forage-android/src/test/java/com/joinforage/forage/android/core/element/state/ElementStateTest.kt

@@ -0,0 +1,33 @@
+package com.joinforage.forage.android.core.element.state
+
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.Test
+
+class ElementStateTest {
+
+    @Test
+    fun testInitialPinElementState() {
+        assertThat(INITIAL_PIN_ELEMENT_STATE.isFocused).isFalse
+        assertThat(INITIAL_PIN_ELEMENT_STATE.isBlurred).isTrue
+        assertThat(INITIAL_PIN_ELEMENT_STATE.isEmpty).isTrue
+        assertThat(INITIAL_PIN_ELEMENT_STATE.isValid).isFalse
+        assertThat(INITIAL_PIN_ELEMENT_STATE.isComplete).isFalse
+        assertThat(INITIAL_PIN_ELEMENT_STATE.validationError).isNull()
+
+        // cast to Any? to avoid ambiguous overload issue that
+        // is unique to PinDetails because it's an alias for `Nothing?`
+        assertThat(INITIAL_PIN_ELEMENT_STATE.details as Any?).isNull()
+    }
+
+    @Test
+    fun testInitialPanElementState() {
+        assertThat(INITIAL_PAN_ELEMENT_STATE.isFocused).isFalse
+        assertThat(INITIAL_PAN_ELEMENT_STATE.isBlurred).isTrue
+        assertThat(INITIAL_PAN_ELEMENT_STATE.isEmpty).isTrue
+        assertThat(INITIAL_PAN_ELEMENT_STATE.isValid).isTrue
+        assertThat(INITIAL_PAN_ELEMENT_STATE.isComplete).isFalse
+        assertThat(INITIAL_PAN_ELEMENT_STATE.validationError).isNull()
+        assertThat(INITIAL_PAN_ELEMENT_STATE.details).isEqualTo(PanDetails(DerivedCardInfo()))
+    }
+
+}