feat(nextcloud): Allow overriding the version check supported value

Signed-off-by: provokateurin <kate@provokateurin.de>

Author: provokateurin

packages/nextcloud/lib/src/helpers/common.dart

@@ -11,7 +11,9 @@ class VersionCheck {
     required this.versions,
     required this.minimumVersion,
     required int? maximumMajor,
-  }) : maximumMajor = maximumMajor ?? minimumVersion.major;
+    bool? isSupportedOverride,
+  })  : maximumMajor = maximumMajor ?? minimumVersion.major,
+        _isSupportedOverride = isSupportedOverride;
 
   /// Current version of the app.
   final List<Version>? versions;
@@ -22,11 +24,18 @@ class VersionCheck {
   /// Maximum major version of the app.
   late final int maximumMajor;
 
+  /// Overrides the check if the current version is supported.
+  final bool? _isSupportedOverride;
+
   /// Whether the [versions] is allowed by the [minimumVersion] and [maximumMajor].
   ///
   /// If [versions] is `null` or empty it is assumed that the app is supported.
   /// Only one of the [versions] has to be supported to return `true`.
   bool get isSupported {
+    if (_isSupportedOverride != null) {
+      return _isSupportedOverride!;
+    }
+
     if (versions == null || versions!.isEmpty) {
       return true;
     }