Add nil check for tool.Annotations and rename Test_CreateIssue to Test_IssueWrite_Create

Addresses Copilot feedback on #2470. The test exercises IssueWrite, so
its name now matches the tool under test.

Author: gokhanarkan

pkg/github/issues_test.go

@@ -1050,14 +1050,15 @@ func unmarshalIFC(t *testing.T, ifcLabel any) map[string]any {
 	return ifcMap
 }
 
-func Test_CreateIssue(t *testing.T) {
+func Test_IssueWrite_Create(t *testing.T) {
 	// Verify tool definition once
 	serverTool := IssueWrite(translations.NullTranslationHelper)
 	tool := serverTool.Tool
 	require.NoError(t, toolsnaps.Test(tool.Name, tool))
 
 	assert.Equal(t, "issue_write", tool.Name)
 	assert.NotEmpty(t, tool.Description)
+	require.NotNil(t, tool.Annotations)
 	require.NotNil(t, tool.Annotations.DestructiveHint)
 	assert.True(t, *tool.Annotations.DestructiveHint)
 	assert.Contains(t, tool.InputSchema.(*jsonschema.Schema).Properties, "method")