Replace summaryOnDemand by summarizeNow

[pragya91]

Followup from PR: https://github.com/microsoft/FluidFramework/pull/22173 Replaced summarizeOnDemand() with summarizeNow() so that the loadContainer utility can be provided with the summaryVersion. This ensures that the container refers to the latest snapshot and not some stale one.

[changeset-bot[bot]]

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Latest commit: d28b2d98ca50fbf4ca928f998a656fa1916ee379

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[msfluid-bot]

⯅ @fluid-example/bundle-size-tests: +245 Bytes

Metric Name	Baseline Size	Compare Size	Size Diff
aqueduct.js	457.44 KB	457.47 KB	⯅ +35 Bytes
azureClient.js	554.61 KB	554.66 KB	⯅ +49 Bytes
connectionState.js	680 Bytes	680 Bytes	■ No change
containerRuntime.js	258.11 KB	258.12 KB	⯅ +14 Bytes
fluidFramework.js	406.79 KB	406.81 KB	⯅ +14 Bytes
loader.js	134.1 KB	134.11 KB	⯅ +14 Bytes
map.js	42.13 KB	42.14 KB	⯅ +7 Bytes
matrix.js	146.42 KB	146.42 KB	⯅ +7 Bytes
odspClient.js	522.76 KB	522.8 KB	⯅ +49 Bytes
odspDriver.js	97.55 KB	97.57 KB	⯅ +21 Bytes
odspPrefetchSnapshot.js	42.61 KB	42.62 KB	⯅ +14 Bytes
sharedString.js	163.14 KB	163.15 KB	⯅ +7 Bytes
sharedTree.js	397.31 KB	397.31 KB	⯅ +7 Bytes
Total Size	3.3 MB	3.3 MB	⯅ +245 Bytes

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Baseline commit: 7a9c3c052fde2b1b88d8123613988b0b7f461385

Generated by :no_entry_sign: dangerJS against d28b2d98ca50fbf4ca928f998a656fa1916ee379