[port 2.0]: Avoid two leading slashes in the request to create a new …

…file (#22588)

Cherry-pick: #22563

Co-authored-by: Andrew Boktor <aboktor@microsoft.com>

[Port 2.2] Hide part of code behind feature flag (#22529) (#22540)

Original: #22529
Part of a hotfix

There is some minimum sequence number shenanigans going on. Not exactly
sure, but we want to be able to safely turn off the feature.

[Port 2.1] Hide part of code behind feature flag (#22529) (#22539)

Original: #22529
Part of a hotfix

There is some minimum sequence number shenanigans going on. Not exactly
sure, but we want to be able to safely turn off the feature.

[Port 2.0] Hide part of code behind feature flag (#22529) (#22537)

Original: #22529
Part of a hotfix

There is some minimum sequence number shenanigans going on. Not exactly
sure, but we want to be able to safely turn off the feature.

Add 2.3 release notes (#22542)

## Description

Done by checking cherrypicking #22541

fix(generate:typetests): Resolve symlinks to previous versions (#22494)

The previous version types path is a symlink or junction, and without
resolving them to a real path, the module resolution in ts-morph was
wrong, and was picking up local packages.

This change ensures we resolve the symlink/junction before we add the
SourceFile to ts-morph.

Update API-Extractor (#22474)

## Description

Update the version of API Extractor we use.

tree: More schema cleanup (#22322)

## Description

Reduce use of SchemaBuilderInternal.

Fix missing sort when persisting field schema found while editing test
schema: this is not a correctness issue, but should improve consistency
and thus blob reuse in the encoded format.

Fix flaky test for attribution for r11s (#22313)

## Description

[ADO Task
Link](https://dev.azure.com/fluidframework/internal/_workitems/edit/10969)

Fix flaky test for attribution for r11s. Move clientid check after
ensureSynchronized so that we can make sure we are connected.

Co-authored-by: Jatin Garg <jatingarg@Jatins-MacBook-Pro-2.local>

Make test less likely to hang on container creation (#22290)

[AB#10957](https://dev.azure.com/fluidframework/235294da-091d-4c29-84fc-cdfc3d90890b/_workitems/edit/10957)

Make the container less likely to hang on container creation.