[db] expose installedVersionName for UpdatableApp

so that we can show to what version the update version would get applied to

libs/database/src/main/java/org/fdroid/database/App.kt

@@ -379,6 +379,7 @@ public data class UpdatableApp internal constructor(
     public override val repoId: Long,
     public override val packageName: String,
     public val installedVersionCode: Long,
+    public val installedVersionName: String,
     public val update: AppVersion,
     public val isFromPreferredRepo: Boolean,
     /**

libs/database/src/main/java/org/fdroid/database/DbUpdateChecker.kt

@@ -69,6 +69,7 @@ public class DbUpdateChecker @JvmOverloads constructor(
                 val app = getUpdatableApp(
                     version = version,
                     installedVersionCode = getLongVersionCode(packageInfo),
+                    installedVersionName = packageInfo.versionName ?: "???", // should never be null
                     isFromPreferredRepo = preferredRepoId == version.repoId,
                 )
                 if (app != null) updatableApps.add(app)
@@ -158,6 +159,7 @@ public class DbUpdateChecker @JvmOverloads constructor(
     private fun getUpdatableApp(
         version: Version,
         installedVersionCode: Long,
+        installedVersionName: String,
         isFromPreferredRepo: Boolean,
     ): UpdatableApp? {
         val versionedStrings = versionDao.getVersionedStrings(
@@ -171,6 +173,7 @@ public class DbUpdateChecker @JvmOverloads constructor(
             repoId = version.repoId,
             packageName = version.packageName,
             installedVersionCode = installedVersionCode,
+            installedVersionName = installedVersionName,
             update = version.toAppVersion(versionedStrings),
             isFromPreferredRepo = isFromPreferredRepo,
             hasKnownVulnerability = version.hasKnownVulnerability,