Rename OIDC components and variables to OAuth (#6686)

* Rename `OIDC` components and variables to `OAuth`. This matches the new behavior in the SDK.

libraries/oauth/test/build.gradle.kts

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2025 Element Creations Ltd.
+ * Copyright 2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+plugins {
+    id("io.element.android-library")
+}
+
+android {
+    namespace = "io.element.android.libraries.oauth.test"
+}
+
+dependencies {
+    implementation(libs.coroutines.core)
+    api(projects.libraries.oauth.api)
+    implementation(projects.tests.testutils)
+}

libraries/oauth/test/src/main/kotlin/io/element/android/libraries/oauth/test/FakeOAuthIntentResolver.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2025 Element Creations Ltd.
+ * Copyright 2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.libraries.oauth.test
+
+import android.content.Intent
+import io.element.android.libraries.oauth.api.OAuthAction
+import io.element.android.libraries.oauth.api.OAuthIntentResolver
+import io.element.android.tests.testutils.lambda.lambdaError
+
+class FakeOAuthIntentResolver(
+    private val resolveResult: (Intent) -> OAuthAction? = { lambdaError() }
+) : OAuthIntentResolver {
+    override fun resolve(intent: Intent): OAuthAction? {
+        return resolveResult(intent)
+    }
+}

libraries/oauth/test/src/main/kotlin/io/element/android/libraries/oauth/test/customtab/FakeOAuthActionFlow.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2025 Element Creations Ltd.
+ * Copyright 2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.libraries.oauth.test.customtab
+
+import io.element.android.libraries.oauth.api.OAuthAction
+import io.element.android.libraries.oauth.api.OAuthActionFlow
+import kotlinx.coroutines.flow.FlowCollector
+import kotlinx.coroutines.flow.MutableStateFlow
+
+/**
+ * This is actually a copy of DefaultOAuthActionFlow.
+ */
+class FakeOAuthActionFlow : OAuthActionFlow {
+    private val mutableStateFlow = MutableStateFlow<OAuthAction?>(null)
+
+    override fun post(oAuthAction: OAuthAction) {
+        mutableStateFlow.value = oAuthAction
+    }
+
+    override suspend fun collect(collector: FlowCollector<OAuthAction?>) {
+        mutableStateFlow.collect(collector)
+    }
+
+    override fun reset() {
+        mutableStateFlow.value = null
+    }
+}