fix(android): Call toString on versionName (#1480)

Author: ahqsoftwares

.changes/wry-activity.md

@@ -0,0 +1,5 @@
+---
+"wry": patch
+---
+
+Fixed an issue that could cause `Return type mismatch: expected 'kotlin.String', actual 'kotlin.String?'` errors.

src/android/kotlin/WryActivity.kt

@@ -38,15 +38,15 @@ abstract class WryActivity : AppCompatActivity() {
             try {
                 @Suppress("DEPRECATION")
                 val info = packageManager.getPackageInfo(webViewPackage, 0)
-                return info.versionName
+                return info.versionName.toString()
             } catch (ex: Exception) {
                 Logger.warn("Unable to get package info for '$webViewPackage'$ex")
             }
 
             try {
                 @Suppress("DEPRECATION")
                 val info = packageManager.getPackageInfo("com.android.webview", 0)
-                return info.versionName
+                return info.versionName.toString()
             } catch (ex: Exception) {
                 Logger.warn("Unable to get package info for 'com.android.webview'$ex")
             }