Handle Closed Delta Managers in Op Processing Controller

[anthony-murphy]

related #4700

[msfluid-bot]

⯆ @fluidframework/base-host: -23 Bytes

Metric Name	Baseline Size	Compare Size	Size Diff
main.js	164.76 KB	164.74 KB	⯆ -23 Bytes
Total Size	164.76 KB	164.74 KB	⯆ -23 Bytes

■ @fluid-example/bundle-size-tests: No change

Metric Name	Baseline Size	Compare Size	Size Diff
container.js	187.57 KB	187.57 KB	■ No change
map.js	45.84 KB	45.84 KB	■ No change
matrix.js	144.52 KB	144.52 KB	■ No change
odspDriver.js	193.21 KB	193.21 KB	■ No change
sharedString.js	158.46 KB	158.46 KB	■ No change
Total Size	729.61 KB	729.61 KB	■ No change

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Baseline commit: 532d047

Generated by 🚫 dangerJS against 6ede9f6

[anthony-murphy]

covered by #4718