Thinking Tokens/Text never appears with BYOK models regardless of endpoint type

### Describe the bug

Thinking Tokens/Text never appears with BYOK models regardless of endpoint type

### Affected version

1.0.61

### Steps to reproduce the behavior

Ask a question or any directive that would cause the model to think. And you will observe that the Thinking text or thinking tokens never appear on the display regardless of the settings you give to co-pilot.

### Expected behavior

As user I'm expecting to see the thinking text that the model is going through while it's contemplating or thinking what to do.

### Additional context

In many occasions I just don't know if the connection is lost or is there a bug, because I do not observe the model thinking. Also when it's thinking for too long I have no way or recourse of observing if it went into a thinking loop.

Nell’issue non sono indicati file sorgente, test o punti di ingresso. Riproduci il problema con un modello BYOK tra i vari tipi di endpoint e le impostazioni Copilot pertinenti, quindi traccia il percorso fino a dove l’output di thinking del modello dovrebbe arrivare alla visualizzazione. Il lavoro è completato quando il testo di thinking o gli aggiornamenti dei token sono visibili mentre il modello sta elaborando.

Scritto dal modello di indicizzazione a partire dal testo della issue.