Throw error if snapshot response is empty

[jatgarg]

Description

Throw error if snapshot response is empty from the browser.

[msfluid-bot]

⯅ @fluid-example/bundle-size-tests: +576 Bytes

Metric Name	Baseline Size	Compare Size	Size Diff
aqueduct.js	454.95 KB	454.95 KB	■ No change
azureClient.js	552.06 KB	552.06 KB	■ No change
connectionState.js	680 Bytes	680 Bytes	■ No change
containerRuntime.js	258.8 KB	258.8 KB	■ No change
fluidFramework.js	357.54 KB	357.54 KB	■ No change
loader.js	132.78 KB	132.78 KB	■ No change
map.js	41.45 KB	41.45 KB	■ No change
matrix.js	143.67 KB	143.67 KB	■ No change
odspClient.js	520.4 KB	520.6 KB	⯅ +200 Bytes
odspDriver.js	97.1 KB	97.29 KB	⯅ +196 Bytes
odspPrefetchSnapshot.js	41.98 KB	42.15 KB	⯅ +180 Bytes
sharedString.js	160.19 KB	160.19 KB	■ No change
sharedTree.js	357.53 KB	357.53 KB	■ No change
Total Size	3.19 MB	3.2 MB	⯅ +576 Bytes

---

Baseline commit: f8a24df

Generated by 🚫 dangerJS against a33b5f7