ContainerRuntime: Remove the contents property of batchBegin/batchEnd's "op" event arg

[markfields]

Description

Fixes AB#19784

ContainerRuntime's 'batchBegin'/'batchEnd' events: Removing the contents property on event arg op

The 'batchBegin'/'batchEnd' events on ContainerRuntime indicate when a batch is beginning/finishing being processed.
The contents property on there is not useful or relevant when reasoning over incoming changes at the batch level.
So it has been removed from the op event arg.

Breaking Changes

Yes this is a breaking change. See changeset.

[markfields]

Converting to Draft until main is open for breaking changes

[markfields]

I'll be OOF until 11/14. I'll plan to bring this in for 2.10.0 at that point if it's not too late (unless someone decides to merge this for me while I'm OOF)

[msfluid-bot]

⯅ @fluid-example/bundle-size-tests: +233 Bytes

Metric Name	Baseline Size	Compare Size	Size Diff
aqueduct.js	464.03 KB	464.06 KB	⯅ +32 Bytes
azureClient.js	562.45 KB	562.49 KB	⯅ +46 Bytes
connectionState.js	724 Bytes	724 Bytes	■ No change
containerRuntime.js	261.86 KB	261.87 KB	⯅ +11 Bytes
fluidFramework.js	424.82 KB	424.84 KB	⯅ +14 Bytes
loader.js	134.17 KB	134.19 KB	⯅ +14 Bytes
map.js	42.71 KB	42.71 KB	⯅ +7 Bytes
matrix.js	148.54 KB	148.55 KB	⯅ +7 Bytes
odspClient.js	528.3 KB	528.34 KB	⯅ +46 Bytes
odspDriver.js	97.84 KB	97.86 KB	⯅ +21 Bytes
odspPrefetchSnapshot.js	42.81 KB	42.83 KB	⯅ +14 Bytes
sharedString.js	164.58 KB	164.58 KB	⯅ +7 Bytes
sharedTree.js	415.28 KB	415.29 KB	⯅ +7 Bytes
Total Size	3.36 MB	3.36 MB	⯅ +233 Bytes

---

Baseline commit: 2aa0b5e

Generated by 🚫 dangerJS against 5738a9b

[markfields]

@kian-thompson feel free to merge this if the time is right for breaking changes. Not paying attention broadly, just saw the notification that you approved it.

[github-actions]

🔗 No broken links found! ✅

Your attention to detail is admirable.

linkcheck output

> [email protected] ci:linkcheck /home/runner/work/FluidFramework/FluidFramework/docs
> start-server-and-test ci:start 1313 linkcheck:full

1: starting server using command "npm run ci:start"
and when url "[ 'http://127.0.0.1:1313' ]" is responding with HTTP status code 200
running tests using command "npm run linkcheck:full"


> [email protected] ci:start
> http-server ./public --port 1313 --silent


> [email protected] linkcheck:full
> npm run linkcheck:fast -- --external


> [email protected] linkcheck:fast
> linkcheck http://localhost:1313 --skip-file skipped-urls.txt --external

Crawling...

Stats:
  447786 links
    3441 destination URLs
       2 URLs ignored
       0 warnings
       0 errors

[msfluid-bot]

Code Coverage Summary

No packages impacted by the change.

---

Baseline commit: 2aa0b5e
Baseline build: 304363
Happy Coding!!

Code coverage comparison check passed!!

[tylerbutler]

reworded the changeset a bit - approving for docs.