Test/fix requests with knn

[PavelShilin89]

Type of Change (select one):

• Bug fix

Description of the Change:
A test has been created confirming that:

• The issue with handling a string array when inserting into a float_vector field has been fixed. The system now correctly reports the need to use a numeric array.
• The error message for executing a KNN query on a table with an incorrect structure has been corrected. The system now returns an accurate message indicating the absence of index parameters for the float_vector field.
• The issue with executing KNN queries without explicitly specifying index parameters has been fixed. Previously, when creating a table with a float_vector field without parameters such as knn_type, knn_dims, and hnsw_similarity, KNN queries would return the error “Undefined array key 0”. Now, the system provides a proper message indicating that the indexing parameters must be defined.
• The issue with handling KNN queries when using an int field as the vector field has been addressed. Now, when attempting to execute a KNN query with an int field, the system correctly returns an error indicating the data type mismatch, instead of a message about incorrect return type in the getQueryVectorValue() function.

Related Issue (provide the link):

• Incorrect handling of string array insertion into float_vector field
• Incorrect KNN query execution on a table with missing index parameters
• Incorrect KNN query execution without specifying index parameters
• Incorrect handling of KNN query when using an int field for the vector

[PavelShilin89]

Закрыт, выполнено в другом PR.