Ensure connectivity to private HF spaces with SSE protocol (#8181)
* add msw setup and initialisation tests
* add changeset
* add eventsource polyfill for node and browser envs
* add changeset
* add changeset
* config tweak
* types
* update eventsource usage
* add changeset
* add walk_and_store_blobs improvements and add tests
* add changeset
* api_info tests
* add direct space URL link tests
* fix tests
* add view_api tests
* add post_message test
* tweak
* add spaces tests
* jwt and protocol tests
* add post_data tests
* test tweaks
* dynamically import eventsource
* revet eventsource imports
* add jwt param to sse requests
* add stream test
* add changeset
* add changeset
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