csharp: update and disable tests that use deprecated eolian type notations

csharp: update and disable tests that use deprecated eolian type notations

Summary:
Avoid the usage of deprecated Eolian type notations like `ptr()` in C# unit
tests.

In places where an alternative type could be used, tests were changed to use
a valid type, e.g. containers that stored `ptr(int)` were changed to store
`string`.

Tests for types that require a pointer notation were commented out and
disabled. They can be re-enabled when a new notation to the type is defined.

Depends on D9238

Test Plan: `meson test`

Reviewers: lauromoura, felipealmeida, q66, segfaultxavi

Reviewed By: lauromoura

Subscribers: cedric, #reviewers, bu5hm4n, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D9247