Revert the revert of Shared Directory changes and make them non breaking in main

[jatgarg]

1.) These changes were already merged in main but needed to be reverted as per the decision taken then because it leads to OWH change their implementation of IDirectory.
2.) As per the latest discussion, we can introduce these changes again in non breaking way and mention in upcoming changes.

Previous merged PRs:
#9087 - Add dispose event on directory deletion
#9451 - Emit dispose event recursively

[msfluid-bot]

⯅ @fluid-example/bundle-size-tests: +1.14 KB

Metric Name	Baseline Size	Compare Size	Size Diff
aqueduct.js	381.25 KB	382.39 KB	⯅ +1.14 KB
containerRuntime.js	189.5 KB	189.5 KB	■ No change
loader.js	158.9 KB	158.9 KB	■ No change
map.js	204.6 KB	204.6 KB	■ No change
matrix.js	292.1 KB	292.1 KB	■ No change
odspDriver.js	182.82 KB	182.82 KB	■ No change
odspPrefetchSnapshot.js	76.73 KB	76.73 KB	■ No change
sharedString.js	311.58 KB	311.58 KB	■ No change
Total Size	1.79 MB	1.79 MB	⯅ +1.14 KB

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Baseline commit: 1d97cdb

Generated by 🚫 dangerJS against b83b6d1