[BUG] LLM model dropdown shows technical model name instead of user-friendly Display name

[epamLDadayan]

Title: LLM model dropdown shows technical model name instead of user-friendly Display name

Description:
In model selection dropdowns, LLMs are listed by their internal model names (technical IDs) rather than the configured Display names, making selection confusing for users.

Steps to reproduce:

1. Open any model selection dropdown (e.g., in Agent, Pipeline, Datasource, or Chat).
2. Browse the LLM list.

Actual Result:
Technical model names are shown (e.g., “gpt-4o-mini-2024-07-18”, “anthropic.claude-3-5-sonnet-...”).

Expected Result:
Show the Display name (user-friendly label) for each model.

Notes (optional):

• Apply consistently across all model pickers.
• Ensure search works by Display name.

[HawkQing1]

@daniilmotsniy the model list API "/api/v1/configurations/models/project_id?include_shared=true" should return user friendly name to FE

[HawkQing1]

@daniilmotsniy I've modified the FE to show display_name, please change the models list API.

[HawkQing1]

@epamLDadayan it should be fixed on dev, please verify it.

[HawkQing1]

@epamLDadayan the configuration name and selected model name have been fixed on dev, please verify it.

[epamLDadayan]

@HawkQing1 , @daniilmotsniy if possible let;s show the Display Name of the model in Thinking Steps.