fix: Handle errors from input filtering better

[shibbas]

Purpose

Handle the content filtered errors from Open AI better. For reference: https://learn.microsoft.com/en-us/azure/ai-services/openai/concepts/content-filter

Changes include:

• Handling bad request errors separately from internal server errors
• Handle content filtering in the middle of streamed output.
• Fix bug where error message is not sticky to the user input but is only shown once.
• Fix bug where loading indicator does not show up after an error

Does this introduce a breaking change?

[ ] Yes
[X] No

Pull Request Type

What kind of change does this Pull Request introduce?

[X] Bugfix
[X] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install