Simplify state machine of pending summary state after summary is submitted

[NicholasCouri]

The initial goal for this task was to simplify the state machine of the pending summary state after a summary is submitted.

In order to better understand how often the scenario happens, we are simply adding a telemetry event that will be logged whenever the proposal handle is not on the pendingsummaries list.

Addressing part of #AB444

Note: this will also help understand a problem on FRS in which the pendingsummaries list never seems to have the proposal handle.

[msfluid-bot]

⯅ @fluid-example/bundle-size-tests: +930 Bytes

Metric Name	Baseline Size	Compare Size	Size Diff
aqueduct.js	388.31 KB	388.72 KB	⯅ +426 Bytes
connectionState.js	680 Bytes	680 Bytes	■ No change
containerRuntime.js	191.48 KB	191.9 KB	⯅ +426 Bytes
loader.js	151.04 KB	151.12 KB	⯅ +78 Bytes
map.js	42.63 KB	42.63 KB	■ No change
matrix.js	128.09 KB	128.09 KB	■ No change
odspDriver.js	150.23 KB	150.23 KB	■ No change
odspPrefetchSnapshot.js	38.39 KB	38.39 KB	■ No change
sharedString.js	148.73 KB	148.73 KB	■ No change
Total Size	1.24 MB	1.24 MB	⯅ +930 Bytes

---

Baseline commit: 58e699fea06d56f05dacf0ca3318710911cb466c

Generated by :no_entry_sign: dangerJS against be474a59dc6ca54b8f46430f620c7b9f19cf8adf

[github-actions[bot]]

This commit is queued for merging with the next branch! Please ignore this PR for now. Contact @microsoft/fluid-cr-infra for help.