Merge branch 'main' of github.com:firebase/firebase-js-sdk into feat/pipelines

Author: MarkDuckworth

.changeset/brave-boats-arrive.md

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+---
+'firebase': minor
+'@firebase/ai': minor
+---
+
+Added a `sendFunctionResponses` method to `LiveSession`, allowing function responses to be sent during realtime sessions.
+Fixed an issue where function responses during audio conversations caused the WebSocket connection to close. See [GitHub Issue #9264](https://github.com/firebase/firebase-js-sdk/issues/9264).
+ - **Breaking Change**: Changed the `functionCallingHandler` property in `StartAudioConversationOptions` so that it now must return a `Promise<FunctionResponse>`.
+   This breaking change is allowed in a minor release since the Live API is in Public Preview.

.changeset/brown-pens-confess.md

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+---
+'@firebase/ai': patch
+---
+
+Updated SDK to handle empty parts when streaming.

.changeset/giant-lamps-live.md

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+---
+'firebase': minor
+'@firebase/ai': minor
+---
+
+Added support for the URL context tool, which allows the model to access content from provided public web URLs to inform and enhance its responses.