fix(sdk): recover chat transport when a restored session no longer exists #6812

Job	Run time
Detect changes	4s
sdk-compat / Deno Runtime	2m 13s
sdk-compat / Cloudflare Workers	2m 2s
internal / 🧪 Unit Tests: Internal (4, 8)	6m 40s
internal / 🧪 Unit Tests: Internal (3, 8)	8m 37s
sdk-compat / Node.js 22.12 (ubuntu-latest)	1m 48s
internal / 🧪 Unit Tests: Internal (8, 8)	6m 19s
sdk-compat / Bun Runtime	2m 9s
webapp / 🧪 Unit Tests: Webapp (2, 8)	4m 30s
webapp / 🧪 Unit Tests: Webapp (4, 8)	8m 10s
webapp / 🧪 Unit Tests: Webapp (1, 8)	6m 15s
internal / 🧪 Unit Tests: Internal (7, 8)	5m 39s
internal / 🧪 Unit Tests: Internal (6, 8)	5m 6s
internal / 🧪 Unit Tests: Internal (5, 8)	5m 23s
internal / 🧪 Unit Tests: Internal (1, 8)	6m 37s
webapp / 🧪 Unit Tests: Webapp (3, 8)	3m 30s
e2e-webapp / 🧪 E2E Tests: Webapp	3m 3s
webapp / 🧪 Unit Tests: Webapp (8, 8)	7m 21s
typecheck / typecheck	6m 30s
webapp / 🧪 Unit Tests: Webapp (5, 8)	5m 39s
internal / 🧪 Unit Tests: Internal (2, 8)	12m 47s
sdk-compat / Node.js 20.20 (ubuntu-latest)	2m 4s
webapp / 🧪 Unit Tests: Webapp (7, 8)	8m 49s
packages / 🧪 Unit Tests: Packages (1, 1)	11m 56s
webapp / 🧪 Unit Tests: Webapp (6, 8)	3m 19s
e2e	0s
webapp / 📊 Merge Reports	56s
packages / 📊 Merge Reports	24s
internal / 📊 Merge Reports	26s
All PR Checks	3s
	2h 18m 19s

Provide feedback