fix : tutorial bugs

[Mastermind-sap]

Description

Refer PR #472 . It was not fixed. This is a rebased version of those changes also another error which arised in tutorial is partially fixed here. In the app some elements have an visibility factor, if some element is not visible and in the tour it causes the tutorial to crash.
Steps to reproduce:

1. clear the tour flags.
2. run the app without ccsync server and only local.
3. check the tour of the filter drawer it ends after just the first demonstration.
   Error : I/flutter (11321): FormatException: It was not possible to obtain target position (null).

For now I have made an partial fix to skip those widgets' tutorial which are not visible. But there is a problem in that which needs to be fixed that is after they become visible also the tutorial won't be shown in future as it will be marked as shown.

Fixes #469

Screenshots

Check PR #472

Checklist

• Tests have been added or updated to cover the changes
• Documentation has been updated to reflect the changes
• Code follows the established coding style guidelines
• All tests are passing