Disable test point

This test point runs fine on multiple dev machines (with updated Ollama), but fails in CI with an internal error to Ollama/llama.cpp:

```
  ================================================================================
  Error occurred in tollamaChat/generateWithImages and it did not run to completion.
      ---------
      Error ID:
      ---------
      'llms:apiReturnedError'
      --------------
      Error Details:
      --------------
      Error using ollamaChat/generate (line 238)
      Server returned error indicating: "an unknown error was encountered while
      running the model GGML_ASSERT(i01 >= 0 && i01 < ne01) failed"

      Error in tollamaChat>@(~)generate(chat,messages) (line 136)
                  text = arrayfun(@(~) generate(chat,messages), 1:5,
                  UniformOutput=false);

      Error in tollamaChat/generateWithImages (line 136)
                  text = arrayfun(@(~) generate(chat,messages), 1:5,
                  UniformOutput=false);
  ================================================================================
```

See also ollama/ollama#7288

Author: ccreutzi

tests/tollamaChat.m

@@ -122,6 +122,8 @@ function seedFixesResult(testCase)
         end
 
         function generateWithImages(testCase)
+            testCase.assumeFail("CI only assertion failure within Ollama, as of 2024-10-30, Ollama 0.3.14");
+
             import matlab.unittest.constraints.ContainsSubstring
             chat = ollamaChat("moondream");
             image_path = "peppers.png";