chore: Downmerge main into dev

[Prajwal-Microsoft]

Purpose

• Routine downmerge to sync \dev\ with latest changes from \main.

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

\
git clone https://github.com/microsoft/customer-chatbot-solution-accelerator.git
cd customer-chatbot-solution-accelerator
git checkout dev
\\

• Test the code
  \
  cd infra
  az bicep build --file main.bicep
  az bicep build --file main_custom.bicep
  \\

What to Check

Verify that the following are valid

• No merge conflicts between main and dev
• All Bicep files compile successfully

Other Information

Standard downmerge — no functional changes.