Run the database migrations again when a database is upgraded

Upgrading over an older install crashed before the login screen with
`SQLiteException: no such column: SessionData.position`. The session, cache
and push databases were opened at their new schema version but their tables
were never migrated.

`SqlCipherDriverFactory` overrides `AndroidSqliteDriver.Callback.onUpgrade` so
the database key can be replaced, and never called through to the base
implementation - which is the only thing that runs `schema.migrate`. Every
SQLDelight migration in the app was skipped as a result.

The override now calls `super.onUpgrade` after the re-key, so a database that
crosses the re-key version is still re-encrypted before its tables are
migrated. It moved out of an anonymous object into a named `MigrationCallback`
so the behaviour can be tested.

Part of #7509

libraries/encrypted-db/build.gradle.kts

@@ -5,6 +5,8 @@
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
  * Please see LICENSE files in the repository root for full details.
  */
+import extension.testCommonDependencies
+
 plugins {
     id("io.element.android-library")
 }
@@ -27,4 +29,6 @@ dependencies {
     implementation(libs.google.tink)
 
     implementation(projects.libraries.androidutils)
+
+    testCommonDependencies(libs)
 }