UI: Reasoning Indicator Stays Active Post-Reasoning

Hey everyone,

Just noticed a little UI quirk when using those reasoning models like Qwen and DeepSeek R1.

So, the reasoning indicator keeps spinning, even after it's done reasoning and the answer is being generated. It'd be cool if it could switch to something like "Reasoned in X seconds" or something, just to show it's finished that part.

Not a huge deal, but it'd be a nice little feedback improvement, ya know?

Thanks!