fix: scroll bottom issue

[urmauur]

Describe Your Changes

1. ModelDropdown Component (index.tsx):

   • Text placeholders have been updated for consistency:
     • Changed "Select Model" to "Select a model" in two different instances.

2. EmptyThread Component (EmptyThread/index.tsx):

   • Changed the onboarding message text from "You don't have a local model yet." to "You don't have any model."

3. ChatBody Component (ChatBody/index.tsx):

   • Additional imports include isGeneratingResponseAtom and threadStatesAtom from Thread.atom.
   • Added state checks for generating or streaming responses:
     • isGeneratingResponse is used to check if a response is currently being generated.
     • isStreamingResponse determines if any thread state is waiting for a response.
   • Updated scrolling behavior logic:
     • Ensured that scrolling only happens when it should, based on the generating and streaming states.
     • Refactored handleScroll to account for the isStreamingResponse state, preventing unnecessary callback execution.
     • Updated useEffect to conditionally handle scrolling at appropriate times.

These changes aim to enhance user interaction by providing consistent text prompts and optimizing the chat scrolling experience when new messages are generated or streamed.

Fixes Issues

• Closes feat: Prompt user to download model, if no models are available #3537 feat: Pick new model in thread if original model is unavailable #3385 update copy
• Closes Scroll issue

Self Checklist

• Added relevant comments, esp in complex areas
• Updated docs (for bug fixes / features)
• Created issues for follow-up changes or refactoring needed

[github-actions]

Barecheck - Code coverage report

Total: 68.58%

Your code coverage diff: -0.14% ▾

Uncovered files and lines

File	Lines
web/containers/ModelDropdown/index.tsx	119-120, 126, 137, 147-148, 151, 153-154, 156-157, 159-162, 164, 201-204, 206, 208, 227, 231, 240, 247, 250-251, 287-289, 293, 317-319, 321, 325, 328-333, 340-341, 352, 374, 397, 418, 427, 433, 441-442, 445-450, 453, 456, 508-509, 511, 537, 545, 547, 572, 577-578, 580, 584-586, 588-589, 591, 601-604, 632, 640, 642
web/screens/Thread/ThreadCenterPanel/ChatBody/index.tsx	24-25, 27-28, 30, 34-35, 38-39, 41, 43, 47, 64-69, 71-72, 75-76, 81, 83-84, 88-92, 98-103, 108, 110, 115-117, 123, 125, 127-128, 130-132, 134-135, 139-141, 143, 180
web/screens/Thread/ThreadCenterPanel/ChatBody/EmptyThread/index.tsx	16-17, 19, 28

[github-actions]

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