fix(update): canRequestPackageInstalls 包 try/catch，旧包也不闪退

- 旧版本未声明 REQUEST_INSTALL_PACKAGES 时调该 API 本身会抛 SecurityException
- 现在降级为 capture 后按 false 处理，引导去系统设置开启未知来源
- 版本升至 1.6.9

app/build.gradle.kts

@@ -16,8 +16,8 @@ android {
         applicationId = "com.rainy.token"
         minSdk = 31
         targetSdk = 35
-        versionCode = 18
-        versionName = "1.6.8"
+        versionCode = 19
+        versionName = "1.6.9"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {

app/src/main/java/com/rainy/token/ui/settings/UpdateViewModel.kt

@@ -80,7 +80,9 @@ class UpdateViewModel @Inject constructor(
     }
 
     fun install(file: File) {
-        if (!context.packageManager.canRequestPackageInstalls()) {
+        val canInstall = runCatching { context.packageManager.canRequestPackageInstalls() }
+            .getOrDefault(false)
+        if (!canInstall) {
             _uiState.update { it.copy(phase = Phase.NeedInstallPermission) }
             return
         }